Home / 15,279.21-22,920.63-5,419.47

Finding the Fourth Proportional to 15,279.21, 22,920.63 and 5,419.47

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Solution

The fourth proportional to 15,279.21, 22,920.63 and 5,419.47 is: 8,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.21 : 22,920.63 = 5,419.47 : x
  2. Step 2: Convert to fraction form
    15,279.21/22,920.63 = 5,419.47/x
  3. Step 3: Cross multiply
    15,279.21x = 22,920.63 × 5,419.47
  4. Step 4: Simplify right side
    15,279.21x = 124,217,666.67
  5. Step 5: Solve for x
    x = 124,217,666.67/15,279.21
  6. Step 6: Final answer
    x = 8,129.85

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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.