Home / 20,541.47-30,818.40-8,689.15

Finding the Fourth Proportional to 20,541.47, 30,818.40 and 8,689.15

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Solution

The fourth proportional to 20,541.47, 30,818.40 and 8,689.15 is: 13,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.47 : 30,818.40 = 8,689.15 : x
  2. Step 2: Convert to fraction form
    20,541.47/30,818.40 = 8,689.15/x
  3. Step 3: Cross multiply
    20,541.47x = 30,818.40 × 8,689.15
  4. Step 4: Simplify right side
    20,541.47x = 267,785,644.06
  5. Step 5: Solve for x
    x = 267,785,644.06/20,541.47
  6. Step 6: Final answer
    x = 13,036.34

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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.