Home / 31,094.28-42,916.23-21,657.38

Finding the Fourth Proportional to 31,094.28, 42,916.23 and 21,657.38

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Solution

The fourth proportional to 31,094.28, 42,916.23 and 21,657.38 is: 29,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,094.28 : 42,916.23 = 21,657.38 : x
  2. Step 2: Convert to fraction form
    31,094.28/42,916.23 = 21,657.38/x
  3. Step 3: Cross multiply
    31,094.28x = 42,916.23 × 21,657.38
  4. Step 4: Simplify right side
    31,094.28x = 929,452,886.70
  5. Step 5: Solve for x
    x = 929,452,886.70/31,094.28
  6. Step 6: Final answer
    x = 29,891.44

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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.