Home / 15,583.20-23,374.80-13,639.20

Finding the Fourth Proportional to 15,583.20, 23,374.80 and 13,639.20

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Solution

The fourth proportional to 15,583.20, 23,374.80 and 13,639.20 is: 20,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.20 : 23,374.80 = 13,639.20 : x
  2. Step 2: Convert to fraction form
    15,583.20/23,374.80 = 13,639.20/x
  3. Step 3: Cross multiply
    15,583.20x = 23,374.80 × 13,639.20
  4. Step 4: Simplify right side
    15,583.20x = 318,813,572.16
  5. Step 5: Solve for x
    x = 318,813,572.16/15,583.20
  6. Step 6: Final answer
    x = 20,458.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.