Home / 39,875.30-59,861.55-20,143.70

Finding the Fourth Proportional to 39,875.30, 59,861.55 and 20,143.70

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Solution

The fourth proportional to 39,875.30, 59,861.55 and 20,143.70 is: 30,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.30 : 59,861.55 = 20,143.70 : x
  2. Step 2: Convert to fraction form
    39,875.30/59,861.55 = 20,143.70/x
  3. Step 3: Cross multiply
    39,875.30x = 59,861.55 × 20,143.70
  4. Step 4: Simplify right side
    39,875.30x = 1,205,833,104.74
  5. Step 5: Solve for x
    x = 1,205,833,104.74/39,875.30
  6. Step 6: Final answer
    x = 30,240.10

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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.