Home / 26,526.40-39,789.03-12,478.65

Finding the Fourth Proportional to 26,526.40, 39,789.03 and 12,478.65

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Solution

The fourth proportional to 26,526.40, 39,789.03 and 12,478.65 is: 18,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,526.40 : 39,789.03 = 12,478.65 : x
  2. Step 2: Convert to fraction form
    26,526.40/39,789.03 = 12,478.65/x
  3. Step 3: Cross multiply
    26,526.40x = 39,789.03 × 12,478.65
  4. Step 4: Simplify right side
    26,526.40x = 496,513,379.21
  5. Step 5: Solve for x
    x = 496,513,379.21/26,526.40
  6. Step 6: Final answer
    x = 18,717.71

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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.