Home / 21,291.66-29,381.40-16,259.40

Finding the Fourth Proportional to 21,291.66, 29,381.40 and 16,259.40

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Solution

The fourth proportional to 21,291.66, 29,381.40 and 16,259.40 is: 22,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.66 : 29,381.40 = 16,259.40 : x
  2. Step 2: Convert to fraction form
    21,291.66/29,381.40 = 16,259.40/x
  3. Step 3: Cross multiply
    21,291.66x = 29,381.40 × 16,259.40
  4. Step 4: Simplify right side
    21,291.66x = 477,723,935.16
  5. Step 5: Solve for x
    x = 477,723,935.16/21,291.66
  6. Step 6: Final answer
    x = 22,437.14

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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.