Home / 15,388.41-21,236.02-8,314.85

Finding the Fourth Proportional to 15,388.41, 21,236.02 and 8,314.85

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Solution

The fourth proportional to 15,388.41, 21,236.02 and 8,314.85 is: 11,474.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.41 : 21,236.02 = 8,314.85 : x
  2. Step 2: Convert to fraction form
    15,388.41/21,236.02 = 8,314.85/x
  3. Step 3: Cross multiply
    15,388.41x = 21,236.02 × 8,314.85
  4. Step 4: Simplify right side
    15,388.41x = 176,574,320.90
  5. Step 5: Solve for x
    x = 176,574,320.90/15,388.41
  6. Step 6: Final answer
    x = 11,474.50

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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.