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Finding the Fourth Proportional to 12,594.32, 18,870.96 and 8,889.92

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Solution

The fourth proportional to 12,594.32, 18,870.96 and 8,889.92 is: 13,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,594.32 : 18,870.96 = 8,889.92 : x
  2. Step 2: Convert to fraction form
    12,594.32/18,870.96 = 8,889.92/x
  3. Step 3: Cross multiply
    12,594.32x = 18,870.96 × 8,889.92
  4. Step 4: Simplify right side
    12,594.32x = 167,761,324.72
  5. Step 5: Solve for x
    x = 167,761,324.72/12,594.32
  6. Step 6: Final answer
    x = 13,320.40

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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.