Home / 28,001.10-42,001.65-8,277.90

Finding the Fourth Proportional to 28,001.10, 42,001.65 and 8,277.90

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Solution

The fourth proportional to 28,001.10, 42,001.65 and 8,277.90 is: 12,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.10 : 42,001.65 = 8,277.90 : x
  2. Step 2: Convert to fraction form
    28,001.10/42,001.65 = 8,277.90/x
  3. Step 3: Cross multiply
    28,001.10x = 42,001.65 × 8,277.90
  4. Step 4: Simplify right side
    28,001.10x = 347,685,458.54
  5. Step 5: Solve for x
    x = 347,685,458.54/28,001.10
  6. Step 6: Final answer
    x = 12,416.85

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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.