Home / 10,937.20-16,392.30-7,427.20

Finding the Fourth Proportional to 10,937.20, 16,392.30 and 7,427.20

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Solution

The fourth proportional to 10,937.20, 16,392.30 and 7,427.20 is: 11,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,937.20 : 16,392.30 = 7,427.20 : x
  2. Step 2: Convert to fraction form
    10,937.20/16,392.30 = 7,427.20/x
  3. Step 3: Cross multiply
    10,937.20x = 16,392.30 × 7,427.20
  4. Step 4: Simplify right side
    10,937.20x = 121,748,890.56
  5. Step 5: Solve for x
    x = 121,748,890.56/10,937.20
  6. Step 6: Final answer
    x = 11,131.63

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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.