Home / 15,024.98-20,715.38-9,919.69

Finding the Fourth Proportional to 15,024.98, 20,715.38 and 9,919.69

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Solution

The fourth proportional to 15,024.98, 20,715.38 and 9,919.69 is: 13,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,024.98 : 20,715.38 = 9,919.69 : x
  2. Step 2: Convert to fraction form
    15,024.98/20,715.38 = 9,919.69/x
  3. Step 3: Cross multiply
    15,024.98x = 20,715.38 × 9,919.69
  4. Step 4: Simplify right side
    15,024.98x = 205,490,083.64
  5. Step 5: Solve for x
    x = 205,490,083.64/15,024.98
  6. Step 6: Final answer
    x = 13,676.56

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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.