Home / 18,920.66-26,110.51-10,422.76

Finding the Fourth Proportional to 18,920.66, 26,110.51 and 10,422.76

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Solution

The fourth proportional to 18,920.66, 26,110.51 and 10,422.76 is: 14,383.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.66 : 26,110.51 = 10,422.76 : x
  2. Step 2: Convert to fraction form
    18,920.66/26,110.51 = 10,422.76/x
  3. Step 3: Cross multiply
    18,920.66x = 26,110.51 × 10,422.76
  4. Step 4: Simplify right side
    18,920.66x = 272,143,487.87
  5. Step 5: Solve for x
    x = 272,143,487.87/18,920.66
  6. Step 6: Final answer
    x = 14,383.41

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Half scale
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Double scale
Find fourth proportional to 18,921.66, 26,111.89 and 10,423.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.