Home / 15,439.02-21,305.76-8,726.82

Finding the Fourth Proportional to 15,439.02, 21,305.76 and 8,726.82

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Solution

The fourth proportional to 15,439.02, 21,305.76 and 8,726.82 is: 12,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.02 : 21,305.76 = 8,726.82 : x
  2. Step 2: Convert to fraction form
    15,439.02/21,305.76 = 8,726.82/x
  3. Step 3: Cross multiply
    15,439.02x = 21,305.76 × 8,726.82
  4. Step 4: Simplify right side
    15,439.02x = 185,931,532.48
  5. Step 5: Solve for x
    x = 185,931,532.48/15,439.02
  6. Step 6: Final answer
    x = 12,042.96

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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.