Home / 39,120.24-58,689-21,581.04

Finding the Fourth Proportional to 39,120.24, 58,689 and 21,581.04

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Solution

The fourth proportional to 39,120.24, 58,689 and 21,581.04 is: 32,376.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120.24 : 58,689 = 21,581.04 : x
  2. Step 2: Convert to fraction form
    39,120.24/58,689 = 21,581.04/x
  3. Step 3: Cross multiply
    39,120.24x = 58,689 × 21,581.04
  4. Step 4: Simplify right side
    39,120.24x = 1,266,569,656.56
  5. Step 5: Solve for x
    x = 1,266,569,656.56/39,120.24
  6. Step 6: Final answer
    x = 32,376.33

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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.