Home / 15,414.32-21,271.70-8,340.86

Finding the Fourth Proportional to 15,414.32, 21,271.70 and 8,340.86

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Solution

The fourth proportional to 15,414.32, 21,271.70 and 8,340.86 is: 11,510.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.32 : 21,271.70 = 8,340.86 : x
  2. Step 2: Convert to fraction form
    15,414.32/21,271.70 = 8,340.86/x
  3. Step 3: Cross multiply
    15,414.32x = 21,271.70 × 8,340.86
  4. Step 4: Simplify right side
    15,414.32x = 177,424,271.66
  5. Step 5: Solve for x
    x = 177,424,271.66/15,414.32
  6. Step 6: Final answer
    x = 11,510.35

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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.