Home / 28,987.70-43,493.93-12,355.56

Finding the Fourth Proportional to 28,987.70, 43,493.93 and 12,355.56

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Solution

The fourth proportional to 28,987.70, 43,493.93 and 12,355.56 is: 18,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.70 : 43,493.93 = 12,355.56 : x
  2. Step 2: Convert to fraction form
    28,987.70/43,493.93 = 12,355.56/x
  3. Step 3: Cross multiply
    28,987.70x = 43,493.93 × 12,355.56
  4. Step 4: Simplify right side
    28,987.70x = 537,391,799.97
  5. Step 5: Solve for x
    x = 537,391,799.97/28,987.70
  6. Step 6: Final answer
    x = 18,538.62

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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.