Home / 21,276.90-31,915.34-5,694.12

Finding the Fourth Proportional to 21,276.90, 31,915.34 and 5,694.12

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Solution

The fourth proportional to 21,276.90, 31,915.34 and 5,694.12 is: 8,541.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.90 : 31,915.34 = 5,694.12 : x
  2. Step 2: Convert to fraction form
    21,276.90/31,915.34 = 5,694.12/x
  3. Step 3: Cross multiply
    21,276.90x = 31,915.34 × 5,694.12
  4. Step 4: Simplify right side
    21,276.90x = 181,729,775.80
  5. Step 5: Solve for x
    x = 181,729,775.80/21,276.90
  6. Step 6: Final answer
    x = 8,541.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.