Home / 10,385.08-15,577.79-9,880.85

Finding the Fourth Proportional to 10,385.08, 15,577.79 and 9,880.85

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Solution

The fourth proportional to 10,385.08, 15,577.79 and 9,880.85 is: 14,821.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.08 : 15,577.79 = 9,880.85 : x
  2. Step 2: Convert to fraction form
    10,385.08/15,577.79 = 9,880.85/x
  3. Step 3: Cross multiply
    10,385.08x = 15,577.79 × 9,880.85
  4. Step 4: Simplify right side
    10,385.08x = 153,921,795.86
  5. Step 5: Solve for x
    x = 153,921,795.86/10,385.08
  6. Step 6: Final answer
    x = 14,821.44

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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.