Home / 18,921.47-26,111.37-10,423.41

Finding the Fourth Proportional to 18,921.47, 26,111.37 and 10,423.41

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Solution

The fourth proportional to 18,921.47, 26,111.37 and 10,423.41 is: 14,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.47 : 26,111.37 = 10,423.41 : x
  2. Step 2: Convert to fraction form
    18,921.47/26,111.37 = 10,423.41/x
  3. Step 3: Cross multiply
    18,921.47x = 26,111.37 × 10,423.41
  4. Step 4: Simplify right side
    18,921.47x = 272,169,515.17
  5. Step 5: Solve for x
    x = 272,169,515.17/18,921.47
  6. Step 6: Final answer
    x = 14,384.17

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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.