Home / 39,870.05-59,842.13-20,162.75

Finding the Fourth Proportional to 39,870.05, 59,842.13 and 20,162.75

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Solution

The fourth proportional to 39,870.05, 59,842.13 and 20,162.75 is: 30,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870.05 : 59,842.13 = 20,162.75 : x
  2. Step 2: Convert to fraction form
    39,870.05/59,842.13 = 20,162.75/x
  3. Step 3: Cross multiply
    39,870.05x = 59,842.13 × 20,162.75
  4. Step 4: Simplify right side
    39,870.05x = 1,206,581,506.63
  5. Step 5: Solve for x
    x = 1,206,581,506.63/39,870.05
  6. Step 6: Final answer
    x = 30,262.86

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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.