Home / 20,997.80-31,501.12-6,957.02

Finding the Fourth Proportional to 20,997.80, 31,501.12 and 6,957.02

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Solution

The fourth proportional to 20,997.80, 31,501.12 and 6,957.02 is: 10,436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.80 : 31,501.12 = 6,957.02 : x
  2. Step 2: Convert to fraction form
    20,997.80/31,501.12 = 6,957.02/x
  3. Step 3: Cross multiply
    20,997.80x = 31,501.12 × 6,957.02
  4. Step 4: Simplify right side
    20,997.80x = 219,153,921.86
  5. Step 5: Solve for x
    x = 219,153,921.86/20,997.80
  6. Step 6: Final answer
    x = 10,436.99

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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.