Home / 26,354.81-39,545.20-12,315.81

Finding the Fourth Proportional to 26,354.81, 39,545.20 and 12,315.81

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Solution

The fourth proportional to 26,354.81, 39,545.20 and 12,315.81 is: 18,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,354.81 : 39,545.20 = 12,315.81 : x
  2. Step 2: Convert to fraction form
    26,354.81/39,545.20 = 12,315.81/x
  3. Step 3: Cross multiply
    26,354.81x = 39,545.20 × 12,315.81
  4. Step 4: Simplify right side
    26,354.81x = 487,031,169.61
  5. Step 5: Solve for x
    x = 487,031,169.61/26,354.81
  6. Step 6: Final answer
    x = 18,479.78

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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.