Home / 15,388.12-21,235.61-8,314.52

Finding the Fourth Proportional to 15,388.12, 21,235.61 and 8,314.52

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Solution

The fourth proportional to 15,388.12, 21,235.61 and 8,314.52 is: 11,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.12 : 21,235.61 = 8,314.52 : x
  2. Step 2: Convert to fraction form
    15,388.12/21,235.61 = 8,314.52/x
  3. Step 3: Cross multiply
    15,388.12x = 21,235.61 × 8,314.52
  4. Step 4: Simplify right side
    15,388.12x = 176,563,862.48
  5. Step 5: Solve for x
    x = 176,563,862.48/15,388.12
  6. Step 6: Final answer
    x = 11,474.04

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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.