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Finding the Fourth Proportional to 12,567.88, 18,856.14 and 5,990.68

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Solution

The fourth proportional to 12,567.88, 18,856.14 and 5,990.68 is: 8,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,567.88 : 18,856.14 = 5,990.68 : x
  2. Step 2: Convert to fraction form
    12,567.88/18,856.14 = 5,990.68/x
  3. Step 3: Cross multiply
    12,567.88x = 18,856.14 × 5,990.68
  4. Step 4: Simplify right side
    12,567.88x = 112,961,100.78
  5. Step 5: Solve for x
    x = 112,961,100.78/12,567.88
  6. Step 6: Final answer
    x = 8,988.08

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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.