Home / 20,557.13-28,366.80-11,602.91

Finding the Fourth Proportional to 20,557.13, 28,366.80 and 11,602.91

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Solution

The fourth proportional to 20,557.13, 28,366.80 and 11,602.91 is: 16,010.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.13 : 28,366.80 = 11,602.91 : x
  2. Step 2: Convert to fraction form
    20,557.13/28,366.80 = 11,602.91/x
  3. Step 3: Cross multiply
    20,557.13x = 28,366.80 × 11,602.91
  4. Step 4: Simplify right side
    20,557.13x = 329,137,369.37
  5. Step 5: Solve for x
    x = 329,137,369.37/20,557.13
  6. Step 6: Final answer
    x = 16,010.86

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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.