Home / 15,311.14-21,131.69-9,346.28

Finding the Fourth Proportional to 15,311.14, 21,131.69 and 9,346.28

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Solution

The fourth proportional to 15,311.14, 21,131.69 and 9,346.28 is: 12,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.14 : 21,131.69 = 9,346.28 : x
  2. Step 2: Convert to fraction form
    15,311.14/21,131.69 = 9,346.28/x
  3. Step 3: Cross multiply
    15,311.14x = 21,131.69 × 9,346.28
  4. Step 4: Simplify right side
    15,311.14x = 197,502,691.61
  5. Step 5: Solve for x
    x = 197,502,691.61/15,311.14
  6. Step 6: Final answer
    x = 12,899.28

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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.