Home / 15,419.24-21,278.08-8,704.76

Finding the Fourth Proportional to 15,419.24, 21,278.08 and 8,704.76

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Solution

The fourth proportional to 15,419.24, 21,278.08 and 8,704.76 is: 12,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.24 : 21,278.08 = 8,704.76 : x
  2. Step 2: Convert to fraction form
    15,419.24/21,278.08 = 8,704.76/x
  3. Step 3: Cross multiply
    15,419.24x = 21,278.08 × 8,704.76
  4. Step 4: Simplify right side
    15,419.24x = 185,220,579.66
  5. Step 5: Solve for x
    x = 185,220,579.66/15,419.24
  6. Step 6: Final answer
    x = 12,012.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.