Home / 18,973.40-28,438.50-11,860.92

Finding the Fourth Proportional to 18,973.40, 28,438.50 and 11,860.92

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Solution

The fourth proportional to 18,973.40, 28,438.50 and 11,860.92 is: 17,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.40 : 28,438.50 = 11,860.92 : x
  2. Step 2: Convert to fraction form
    18,973.40/28,438.50 = 11,860.92/x
  3. Step 3: Cross multiply
    18,973.40x = 28,438.50 × 11,860.92
  4. Step 4: Simplify right side
    18,973.40x = 337,306,773.42
  5. Step 5: Solve for x
    x = 337,306,773.42/18,973.40
  6. Step 6: Final answer
    x = 17,777.88

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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.