Home / 17,421.20-26,000.15-15,739.69

Finding the Fourth Proportional to 17,421.20, 26,000.15 and 15,739.69

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Solution

The fourth proportional to 17,421.20, 26,000.15 and 15,739.69 is: 23,490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,421.20 : 26,000.15 = 15,739.69 : x
  2. Step 2: Convert to fraction form
    17,421.20/26,000.15 = 15,739.69/x
  3. Step 3: Cross multiply
    17,421.20x = 26,000.15 × 15,739.69
  4. Step 4: Simplify right side
    17,421.20x = 409,234,389.80
  5. Step 5: Solve for x
    x = 409,234,389.80/17,421.20
  6. Step 6: Final answer
    x = 23,490.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.