Home / 28,010.78-42,016.52-8,289.76

Finding the Fourth Proportional to 28,010.78, 42,016.52 and 8,289.76

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Solution

The fourth proportional to 28,010.78, 42,016.52 and 8,289.76 is: 12,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.78 : 42,016.52 = 8,289.76 : x
  2. Step 2: Convert to fraction form
    28,010.78/42,016.52 = 8,289.76/x
  3. Step 3: Cross multiply
    28,010.78x = 42,016.52 × 8,289.76
  4. Step 4: Simplify right side
    28,010.78x = 348,306,866.84
  5. Step 5: Solve for x
    x = 348,306,866.84/28,010.78
  6. Step 6: Final answer
    x = 12,434.74

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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.