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Finding the Fourth Proportional to 10,980.91, 15,153.67 and 5,945.13

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Solution

The fourth proportional to 10,980.91, 15,153.67 and 5,945.13 is: 8,204.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.91 : 15,153.67 = 5,945.13 : x
  2. Step 2: Convert to fraction form
    10,980.91/15,153.67 = 5,945.13/x
  3. Step 3: Cross multiply
    10,980.91x = 15,153.67 × 5,945.13
  4. Step 4: Simplify right side
    10,980.91x = 90,090,565.23
  5. Step 5: Solve for x
    x = 90,090,565.23/10,980.91
  6. Step 6: Final answer
    x = 8,204.29

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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.