Home / 28,498.80-42,748.08-8,772

Finding the Fourth Proportional to 28,498.80, 42,748.08 and 8,772

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Solution

The fourth proportional to 28,498.80, 42,748.08 and 8,772 is: 13,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.80 : 42,748.08 = 8,772 : x
  2. Step 2: Convert to fraction form
    28,498.80/42,748.08 = 8,772/x
  3. Step 3: Cross multiply
    28,498.80x = 42,748.08 × 8,772
  4. Step 4: Simplify right side
    28,498.80x = 374,986,157.76
  5. Step 5: Solve for x
    x = 374,986,157.76/28,498.80
  6. Step 6: Final answer
    x = 13,157.96

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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.