Home / 10,972.80-16,455.15-5,424.30

Finding the Fourth Proportional to 10,972.80, 16,455.15 and 5,424.30

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Solution

The fourth proportional to 10,972.80, 16,455.15 and 5,424.30 is: 8,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.80 : 16,455.15 = 5,424.30 : x
  2. Step 2: Convert to fraction form
    10,972.80/16,455.15 = 5,424.30/x
  3. Step 3: Cross multiply
    10,972.80x = 16,455.15 × 5,424.30
  4. Step 4: Simplify right side
    10,972.80x = 89,257,670.15
  5. Step 5: Solve for x
    x = 89,257,670.15/10,972.80
  6. Step 6: Final answer
    x = 8,134.45

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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.