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Finding the Fourth Proportional to 18,920.33, 26,110.05 and 10,967.16

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Solution

The fourth proportional to 18,920.33, 26,110.05 and 10,967.16 is: 15,134.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.33 : 26,110.05 = 10,967.16 : x
  2. Step 2: Convert to fraction form
    18,920.33/26,110.05 = 10,967.16/x
  3. Step 3: Cross multiply
    18,920.33x = 26,110.05 × 10,967.16
  4. Step 4: Simplify right side
    18,920.33x = 286,353,152.74
  5. Step 5: Solve for x
    x = 286,353,152.74/18,920.33
  6. Step 6: Final answer
    x = 15,134.68

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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.