Home / 21,712.72-29,965.50-12,281.08

Finding the Fourth Proportional to 21,712.72, 29,965.50 and 12,281.08

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Solution

The fourth proportional to 21,712.72, 29,965.50 and 12,281.08 is: 16,948.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.72 : 29,965.50 = 12,281.08 : x
  2. Step 2: Convert to fraction form
    21,712.72/29,965.50 = 12,281.08/x
  3. Step 3: Cross multiply
    21,712.72x = 29,965.50 × 12,281.08
  4. Step 4: Simplify right side
    21,712.72x = 368,008,702.74
  5. Step 5: Solve for x
    x = 368,008,702.74/21,712.72
  6. Step 6: Final answer
    x = 16,948.99

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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.