Home / 15,726.12-21,702.40-8,652.92

Finding the Fourth Proportional to 15,726.12, 21,702.40 and 8,652.92

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Solution

The fourth proportional to 15,726.12, 21,702.40 and 8,652.92 is: 11,941.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.12 : 21,702.40 = 8,652.92 : x
  2. Step 2: Convert to fraction form
    15,726.12/21,702.40 = 8,652.92/x
  3. Step 3: Cross multiply
    15,726.12x = 21,702.40 × 8,652.92
  4. Step 4: Simplify right side
    15,726.12x = 187,789,131.01
  5. Step 5: Solve for x
    x = 187,789,131.01/15,726.12
  6. Step 6: Final answer
    x = 11,941.22

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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.