Home / 18,726.50-28,111.36-9,511.94

Finding the Fourth Proportional to 18,726.50, 28,111.36 and 9,511.94

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Solution

The fourth proportional to 18,726.50, 28,111.36 and 9,511.94 is: 14,278.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.50 : 28,111.36 = 9,511.94 : x
  2. Step 2: Convert to fraction form
    18,726.50/28,111.36 = 9,511.94/x
  3. Step 3: Cross multiply
    18,726.50x = 28,111.36 × 9,511.94
  4. Step 4: Simplify right side
    18,726.50x = 267,393,569.64
  5. Step 5: Solve for x
    x = 267,393,569.64/18,726.50
  6. Step 6: Final answer
    x = 14,278.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.