Home / 10,920.47-16,385.58-5,725.13

Finding the Fourth Proportional to 10,920.47, 16,385.58 and 5,725.13

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Solution

The fourth proportional to 10,920.47, 16,385.58 and 5,725.13 is: 8,590.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.47 : 16,385.58 = 5,725.13 : x
  2. Step 2: Convert to fraction form
    10,920.47/16,385.58 = 5,725.13/x
  3. Step 3: Cross multiply
    10,920.47x = 16,385.58 × 5,725.13
  4. Step 4: Simplify right side
    10,920.47x = 93,809,493.70
  5. Step 5: Solve for x
    x = 93,809,493.70/10,920.47
  6. Step 6: Final answer
    x = 8,590.25

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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.