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Finding the Fourth Proportional to 10,188.60, 14,060.94 and 5,712.64

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Solution

The fourth proportional to 10,188.60, 14,060.94 and 5,712.64 is: 7,883.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,188.60 : 14,060.94 = 5,712.64 : x
  2. Step 2: Convert to fraction form
    10,188.60/14,060.94 = 5,712.64/x
  3. Step 3: Cross multiply
    10,188.60x = 14,060.94 × 5,712.64
  4. Step 4: Simplify right side
    10,188.60x = 80,325,031.71
  5. Step 5: Solve for x
    x = 80,325,031.71/10,188.60
  6. Step 6: Final answer
    x = 7,883.82

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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.