Home / 15,385.08-21,244.02-9,728.98

Finding the Fourth Proportional to 15,385.08, 21,244.02 and 9,728.98

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Solution

The fourth proportional to 15,385.08, 21,244.02 and 9,728.98 is: 13,433.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.08 : 21,244.02 = 9,728.98 : x
  2. Step 2: Convert to fraction form
    15,385.08/21,244.02 = 9,728.98/x
  3. Step 3: Cross multiply
    15,385.08x = 21,244.02 × 9,728.98
  4. Step 4: Simplify right side
    15,385.08x = 206,682,645.70
  5. Step 5: Solve for x
    x = 206,682,645.70/15,385.08
  6. Step 6: Final answer
    x = 13,433.97

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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.