Home / 20,341.10-28,068.26-11,387.90

Finding the Fourth Proportional to 20,341.10, 28,068.26 and 11,387.90

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Solution

The fourth proportional to 20,341.10, 28,068.26 and 11,387.90 is: 15,713.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.10 : 28,068.26 = 11,387.90 : x
  2. Step 2: Convert to fraction form
    20,341.10/28,068.26 = 11,387.90/x
  3. Step 3: Cross multiply
    20,341.10x = 28,068.26 × 11,387.90
  4. Step 4: Simplify right side
    20,341.10x = 319,638,538.05
  5. Step 5: Solve for x
    x = 319,638,538.05/20,341.10
  6. Step 6: Final answer
    x = 15,713.93

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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.