Home / 21,124.72-31,687.32-5,543.92

Finding the Fourth Proportional to 21,124.72, 31,687.32 and 5,543.92

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Solution

The fourth proportional to 21,124.72, 31,687.32 and 5,543.92 is: 8,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.72 : 31,687.32 = 5,543.92 : x
  2. Step 2: Convert to fraction form
    21,124.72/31,687.32 = 5,543.92/x
  3. Step 3: Cross multiply
    21,124.72x = 31,687.32 × 5,543.92
  4. Step 4: Simplify right side
    21,124.72x = 175,671,967.09
  5. Step 5: Solve for x
    x = 175,671,967.09/21,124.72
  6. Step 6: Final answer
    x = 8,315.94

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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.