Home / 39,875.20-59,812.80-12,169.60

Finding the Fourth Proportional to 39,875.20, 59,812.80 and 12,169.60

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Solution

The fourth proportional to 39,875.20, 59,812.80 and 12,169.60 is: 18,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.20 : 59,812.80 = 12,169.60 : x
  2. Step 2: Convert to fraction form
    39,875.20/59,812.80 = 12,169.60/x
  3. Step 3: Cross multiply
    39,875.20x = 59,812.80 × 12,169.60
  4. Step 4: Simplify right side
    39,875.20x = 727,897,850.88
  5. Step 5: Solve for x
    x = 727,897,850.88/39,875.20
  6. Step 6: Final answer
    x = 18,254.40

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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.