Home / 21,686.55-29,901.20-16,656.45

Finding the Fourth Proportional to 21,686.55, 29,901.20 and 16,656.45

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Solution

The fourth proportional to 21,686.55, 29,901.20 and 16,656.45 is: 22,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686.55 : 29,901.20 = 16,656.45 : x
  2. Step 2: Convert to fraction form
    21,686.55/29,901.20 = 16,656.45/x
  3. Step 3: Cross multiply
    21,686.55x = 29,901.20 × 16,656.45
  4. Step 4: Simplify right side
    21,686.55x = 498,047,759.46
  5. Step 5: Solve for x
    x = 498,047,759.46/21,686.55
  6. Step 6: Final answer
    x = 22,965.74

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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.