Home / 12,545.39-18,818.09-3,186.11

Finding the Fourth Proportional to 12,545.39, 18,818.09 and 3,186.11

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Solution

The fourth proportional to 12,545.39, 18,818.09 and 3,186.11 is: 4,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.39 : 18,818.09 = 3,186.11 : x
  2. Step 2: Convert to fraction form
    12,545.39/18,818.09 = 3,186.11/x
  3. Step 3: Cross multiply
    12,545.39x = 18,818.09 × 3,186.11
  4. Step 4: Simplify right side
    12,545.39x = 59,956,402.67
  5. Step 5: Solve for x
    x = 59,956,402.67/12,545.39
  6. Step 6: Final answer
    x = 4,779.16

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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.