Home / 20,599.59-28,429.92-13,437.15

Finding the Fourth Proportional to 20,599.59, 28,429.92 and 13,437.15

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Solution

The fourth proportional to 20,599.59, 28,429.92 and 13,437.15 is: 18,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.59 : 28,429.92 = 13,437.15 : x
  2. Step 2: Convert to fraction form
    20,599.59/28,429.92 = 13,437.15/x
  3. Step 3: Cross multiply
    20,599.59x = 28,429.92 × 13,437.15
  4. Step 4: Simplify right side
    20,599.59x = 382,017,099.53
  5. Step 5: Solve for x
    x = 382,017,099.53/20,599.59
  6. Step 6: Final answer
    x = 18,544.89

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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.