Home / 15,414.16-21,271.59-8,340.64

Finding the Fourth Proportional to 15,414.16, 21,271.59 and 8,340.64

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Solution

The fourth proportional to 15,414.16, 21,271.59 and 8,340.64 is: 11,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.16 : 21,271.59 = 8,340.64 : x
  2. Step 2: Convert to fraction form
    15,414.16/21,271.59 = 8,340.64/x
  3. Step 3: Cross multiply
    15,414.16x = 21,271.59 × 8,340.64
  4. Step 4: Simplify right side
    15,414.16x = 177,418,674.42
  5. Step 5: Solve for x
    x = 177,418,674.42/15,414.16
  6. Step 6: Final answer
    x = 11,510.11

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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.