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Finding the Fourth Proportional to 39,658.40, 59,477.92 and 11,570.88

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Solution

The fourth proportional to 39,658.40, 59,477.92 and 11,570.88 is: 17,353.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.40 : 59,477.92 = 11,570.88 : x
  2. Step 2: Convert to fraction form
    39,658.40/59,477.92 = 11,570.88/x
  3. Step 3: Cross multiply
    39,658.40x = 59,477.92 × 11,570.88
  4. Step 4: Simplify right side
    39,658.40x = 688,211,874.97
  5. Step 5: Solve for x
    x = 688,211,874.97/39,658.40
  6. Step 6: Final answer
    x = 17,353.50

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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.