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Finding the Fourth Proportional to 12,552.40, 18,830.40 and 6,312.52

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Solution

The fourth proportional to 12,552.40, 18,830.40 and 6,312.52 is: 9,469.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,552.40 : 18,830.40 = 6,312.52 : x
  2. Step 2: Convert to fraction form
    12,552.40/18,830.40 = 6,312.52/x
  3. Step 3: Cross multiply
    12,552.40x = 18,830.40 × 6,312.52
  4. Step 4: Simplify right side
    12,552.40x = 118,867,276.61
  5. Step 5: Solve for x
    x = 118,867,276.61/12,552.40
  6. Step 6: Final answer
    x = 9,469.69

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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.