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Finding the Fourth Proportional to 15,760.32, 21,750.24 and 9,048.12

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Solution

The fourth proportional to 15,760.32, 21,750.24 and 9,048.12 is: 12,486.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760.32 : 21,750.24 = 9,048.12 : x
  2. Step 2: Convert to fraction form
    15,760.32/21,750.24 = 9,048.12/x
  3. Step 3: Cross multiply
    15,760.32x = 21,750.24 × 9,048.12
  4. Step 4: Simplify right side
    15,760.32x = 196,798,781.55
  5. Step 5: Solve for x
    x = 196,798,781.55/15,760.32
  6. Step 6: Final answer
    x = 12,486.98

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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.