Home / 20,980.02-31,471.56-5,986.92

Finding the Fourth Proportional to 20,980.02, 31,471.56 and 5,986.92

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Solution

The fourth proportional to 20,980.02, 31,471.56 and 5,986.92 is: 8,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.02 : 31,471.56 = 5,986.92 : x
  2. Step 2: Convert to fraction form
    20,980.02/31,471.56 = 5,986.92/x
  3. Step 3: Cross multiply
    20,980.02x = 31,471.56 × 5,986.92
  4. Step 4: Simplify right side
    20,980.02x = 188,417,712.00
  5. Step 5: Solve for x
    x = 188,417,712.00/20,980.02
  6. Step 6: Final answer
    x = 8,980.82

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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.