Home / 19,885.92-29,818.08-12,864.96

Finding the Fourth Proportional to 19,885.92, 29,818.08 and 12,864.96

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Solution

The fourth proportional to 19,885.92, 29,818.08 and 12,864.96 is: 19,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.92 : 29,818.08 = 12,864.96 : x
  2. Step 2: Convert to fraction form
    19,885.92/29,818.08 = 12,864.96/x
  3. Step 3: Cross multiply
    19,885.92x = 29,818.08 × 12,864.96
  4. Step 4: Simplify right side
    19,885.92x = 383,608,406.48
  5. Step 5: Solve for x
    x = 383,608,406.48/19,885.92
  6. Step 6: Final answer
    x = 19,290.45

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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.