Home / 15,726.90-21,702.95-8,557.03

Finding the Fourth Proportional to 15,726.90, 21,702.95 and 8,557.03

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Solution

The fourth proportional to 15,726.90, 21,702.95 and 8,557.03 is: 11,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.90 : 21,702.95 = 8,557.03 : x
  2. Step 2: Convert to fraction form
    15,726.90/21,702.95 = 8,557.03/x
  3. Step 3: Cross multiply
    15,726.90x = 21,702.95 × 8,557.03
  4. Step 4: Simplify right side
    15,726.90x = 185,712,794.24
  5. Step 5: Solve for x
    x = 185,712,794.24/15,726.90
  6. Step 6: Final answer
    x = 11,808.61

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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.