Home / 20,712.77-28,549.47-14,655.18

Finding the Fourth Proportional to 20,712.77, 28,549.47 and 14,655.18

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Solution

The fourth proportional to 20,712.77, 28,549.47 and 14,655.18 is: 20,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.77 : 28,549.47 = 14,655.18 : x
  2. Step 2: Convert to fraction form
    20,712.77/28,549.47 = 14,655.18/x
  3. Step 3: Cross multiply
    20,712.77x = 28,549.47 × 14,655.18
  4. Step 4: Simplify right side
    20,712.77x = 418,397,621.75
  5. Step 5: Solve for x
    x = 418,397,621.75/20,712.77
  6. Step 6: Final answer
    x = 20,199.98

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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.