Home / 20,726.66-28,612.39-12,225.92

Finding the Fourth Proportional to 20,726.66, 28,612.39 and 12,225.92

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Solution

The fourth proportional to 20,726.66, 28,612.39 and 12,225.92 is: 16,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.66 : 28,612.39 = 12,225.92 : x
  2. Step 2: Convert to fraction form
    20,726.66/28,612.39 = 12,225.92/x
  3. Step 3: Cross multiply
    20,726.66x = 28,612.39 × 12,225.92
  4. Step 4: Simplify right side
    20,726.66x = 349,812,617.52
  5. Step 5: Solve for x
    x = 349,812,617.52/20,726.66
  6. Step 6: Final answer
    x = 16,877.43

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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.