Home / 22,505.68-31,059.40-13,077.20

Finding the Fourth Proportional to 22,505.68, 31,059.40 and 13,077.20

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Solution

The fourth proportional to 22,505.68, 31,059.40 and 13,077.20 is: 18,047.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,505.68 : 31,059.40 = 13,077.20 : x
  2. Step 2: Convert to fraction form
    22,505.68/31,059.40 = 13,077.20/x
  3. Step 3: Cross multiply
    22,505.68x = 31,059.40 × 13,077.20
  4. Step 4: Simplify right side
    22,505.68x = 406,169,985.68
  5. Step 5: Solve for x
    x = 406,169,985.68/22,505.68
  6. Step 6: Final answer
    x = 18,047.44

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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.