Home / 12,587.79-18,878.31-6,000.87

Finding the Fourth Proportional to 12,587.79, 18,878.31 and 6,000.87

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Solution

The fourth proportional to 12,587.79, 18,878.31 and 6,000.87 is: 8,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.79 : 18,878.31 = 6,000.87 : x
  2. Step 2: Convert to fraction form
    12,587.79/18,878.31 = 6,000.87/x
  3. Step 3: Cross multiply
    12,587.79x = 18,878.31 × 6,000.87
  4. Step 4: Simplify right side
    12,587.79x = 113,286,284.13
  5. Step 5: Solve for x
    x = 113,286,284.13/12,587.79
  6. Step 6: Final answer
    x = 8,999.70

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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.