Home / 10,938.70-15,060.81-9,940.96

Finding the Fourth Proportional to 10,938.70, 15,060.81 and 9,940.96

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Solution

The fourth proportional to 10,938.70, 15,060.81 and 9,940.96 is: 13,687.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.70 : 15,060.81 = 9,940.96 : x
  2. Step 2: Convert to fraction form
    10,938.70/15,060.81 = 9,940.96/x
  3. Step 3: Cross multiply
    10,938.70x = 15,060.81 × 9,940.96
  4. Step 4: Simplify right side
    10,938.70x = 149,718,909.78
  5. Step 5: Solve for x
    x = 149,718,909.78/10,938.70
  6. Step 6: Final answer
    x = 13,687.08

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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.