Home / 28,010.10-42,023.31-8,289.18

Finding the Fourth Proportional to 28,010.10, 42,023.31 and 8,289.18

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Solution

The fourth proportional to 28,010.10, 42,023.31 and 8,289.18 is: 12,436.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.10 : 42,023.31 = 8,289.18 : x
  2. Step 2: Convert to fraction form
    28,010.10/42,023.31 = 8,289.18/x
  3. Step 3: Cross multiply
    28,010.10x = 42,023.31 × 8,289.18
  4. Step 4: Simplify right side
    28,010.10x = 348,338,780.79
  5. Step 5: Solve for x
    x = 348,338,780.79/28,010.10
  6. Step 6: Final answer
    x = 12,436.18

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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.