Home / 21,032.01-31,552.80-6,990.90

Finding the Fourth Proportional to 21,032.01, 31,552.80 and 6,990.90

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Solution

The fourth proportional to 21,032.01, 31,552.80 and 6,990.90 is: 10,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.01 : 31,552.80 = 6,990.90 : x
  2. Step 2: Convert to fraction form
    21,032.01/31,552.80 = 6,990.90/x
  3. Step 3: Cross multiply
    21,032.01x = 31,552.80 × 6,990.90
  4. Step 4: Simplify right side
    21,032.01x = 220,582,469.52
  5. Step 5: Solve for x
    x = 220,582,469.52/21,032.01
  6. Step 6: Final answer
    x = 10,487.94

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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.