Home / 13,712.04-20,555.10-12,454.92

Finding the Fourth Proportional to 13,712.04, 20,555.10 and 12,454.92

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Solution

The fourth proportional to 13,712.04, 20,555.10 and 12,454.92 is: 18,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.04 : 20,555.10 = 12,454.92 : x
  2. Step 2: Convert to fraction form
    13,712.04/20,555.10 = 12,454.92/x
  3. Step 3: Cross multiply
    13,712.04x = 20,555.10 × 12,454.92
  4. Step 4: Simplify right side
    13,712.04x = 256,012,126.09
  5. Step 5: Solve for x
    x = 256,012,126.09/13,712.04
  6. Step 6: Final answer
    x = 18,670.61

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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.