Home / 28,289.48-42,422.66-12,280.04

Finding the Fourth Proportional to 28,289.48, 42,422.66 and 12,280.04

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Solution

The fourth proportional to 28,289.48, 42,422.66 and 12,280.04 is: 18,415.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.48 : 42,422.66 = 12,280.04 : x
  2. Step 2: Convert to fraction form
    28,289.48/42,422.66 = 12,280.04/x
  3. Step 3: Cross multiply
    28,289.48x = 42,422.66 × 12,280.04
  4. Step 4: Simplify right side
    28,289.48x = 520,951,961.71
  5. Step 5: Solve for x
    x = 520,951,961.71/28,289.48
  6. Step 6: Final answer
    x = 18,415.04

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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.