Home / 21,124.70-31,685.40-5,541.92

Finding the Fourth Proportional to 21,124.70, 31,685.40 and 5,541.92

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Solution

The fourth proportional to 21,124.70, 31,685.40 and 5,541.92 is: 8,312.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.70 : 31,685.40 = 5,541.92 : x
  2. Step 2: Convert to fraction form
    21,124.70/31,685.40 = 5,541.92/x
  3. Step 3: Cross multiply
    21,124.70x = 31,685.40 × 5,541.92
  4. Step 4: Simplify right side
    21,124.70x = 175,597,951.97
  5. Step 5: Solve for x
    x = 175,597,951.97/21,124.70
  6. Step 6: Final answer
    x = 8,312.45

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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.