Home / 31,087.16-42,849.04-22,000.80

Finding the Fourth Proportional to 31,087.16, 42,849.04 and 22,000.80

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Solution

The fourth proportional to 31,087.16, 42,849.04 and 22,000.80 is: 30,324.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,087.16 : 42,849.04 = 22,000.80 : x
  2. Step 2: Convert to fraction form
    31,087.16/42,849.04 = 22,000.80/x
  3. Step 3: Cross multiply
    31,087.16x = 42,849.04 × 22,000.80
  4. Step 4: Simplify right side
    31,087.16x = 942,713,159.23
  5. Step 5: Solve for x
    x = 942,713,159.23/31,087.16
  6. Step 6: Final answer
    x = 30,324.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.