Home / 10,932.30-15,090.30-6,455.70

Finding the Fourth Proportional to 10,932.30, 15,090.30 and 6,455.70

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Solution

The fourth proportional to 10,932.30, 15,090.30 and 6,455.70 is: 8,911.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,932.30 : 15,090.30 = 6,455.70 : x
  2. Step 2: Convert to fraction form
    10,932.30/15,090.30 = 6,455.70/x
  3. Step 3: Cross multiply
    10,932.30x = 15,090.30 × 6,455.70
  4. Step 4: Simplify right side
    10,932.30x = 97,418,449.71
  5. Step 5: Solve for x
    x = 97,418,449.71/10,932.30
  6. Step 6: Final answer
    x = 8,911.07

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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.