Home / 23,019.80-31,770.12-12,948.66

Finding the Fourth Proportional to 23,019.80, 31,770.12 and 12,948.66

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Solution

The fourth proportional to 23,019.80, 31,770.12 and 12,948.66 is: 17,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,019.80 : 31,770.12 = 12,948.66 : x
  2. Step 2: Convert to fraction form
    23,019.80/31,770.12 = 12,948.66/x
  3. Step 3: Cross multiply
    23,019.80x = 31,770.12 × 12,948.66
  4. Step 4: Simplify right side
    23,019.80x = 411,380,530.60
  5. Step 5: Solve for x
    x = 411,380,530.60/23,019.80
  6. Step 6: Final answer
    x = 17,870.73

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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.