Home / 20,726.57-28,603.13-12,230.76

Finding the Fourth Proportional to 20,726.57, 28,603.13 and 12,230.76

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Solution

The fourth proportional to 20,726.57, 28,603.13 and 12,230.76 is: 16,878.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.57 : 28,603.13 = 12,230.76 : x
  2. Step 2: Convert to fraction form
    20,726.57/28,603.13 = 12,230.76/x
  3. Step 3: Cross multiply
    20,726.57x = 28,603.13 × 12,230.76
  4. Step 4: Simplify right side
    20,726.57x = 349,838,018.28
  5. Step 5: Solve for x
    x = 349,838,018.28/20,726.57
  6. Step 6: Final answer
    x = 16,878.72

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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.