Home / 28,353.06-42,438.65-18,843.57

Finding the Fourth Proportional to 28,353.06, 42,438.65 and 18,843.57

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Solution

The fourth proportional to 28,353.06, 42,438.65 and 18,843.57 is: 28,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.06 : 42,438.65 = 18,843.57 : x
  2. Step 2: Convert to fraction form
    28,353.06/42,438.65 = 18,843.57/x
  3. Step 3: Cross multiply
    28,353.06x = 42,438.65 × 18,843.57
  4. Step 4: Simplify right side
    28,353.06x = 799,695,577.76
  5. Step 5: Solve for x
    x = 799,695,577.76/28,353.06
  6. Step 6: Final answer
    x = 28,204.91

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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.