Home / 20,377.17-28,120.14-11,302.47

Finding the Fourth Proportional to 20,377.17, 28,120.14 and 11,302.47

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Solution

The fourth proportional to 20,377.17, 28,120.14 and 11,302.47 is: 15,597.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.17 : 28,120.14 = 11,302.47 : x
  2. Step 2: Convert to fraction form
    20,377.17/28,120.14 = 11,302.47/x
  3. Step 3: Cross multiply
    20,377.17x = 28,120.14 × 11,302.47
  4. Step 4: Simplify right side
    20,377.17x = 317,827,038.75
  5. Step 5: Solve for x
    x = 317,827,038.75/20,377.17
  6. Step 6: Final answer
    x = 15,597.21

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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.