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Finding the Fourth Proportional to 10,503.21, 15,753.20 and 4,658.79

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Solution

The fourth proportional to 10,503.21, 15,753.20 and 4,658.79 is: 6,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,503.21 : 15,753.20 = 4,658.79 : x
  2. Step 2: Convert to fraction form
    10,503.21/15,753.20 = 4,658.79/x
  3. Step 3: Cross multiply
    10,503.21x = 15,753.20 × 4,658.79
  4. Step 4: Simplify right side
    10,503.21x = 73,390,827.33
  5. Step 5: Solve for x
    x = 73,390,827.33/10,503.21
  6. Step 6: Final answer
    x = 6,987.47

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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.