Home / 39,222.65-54,127.61-21,317.70

Finding the Fourth Proportional to 39,222.65, 54,127.61 and 21,317.70

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Solution

The fourth proportional to 39,222.65, 54,127.61 and 21,317.70 is: 29,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.65 : 54,127.61 = 21,317.70 : x
  2. Step 2: Convert to fraction form
    39,222.65/54,127.61 = 21,317.70/x
  3. Step 3: Cross multiply
    39,222.65x = 54,127.61 × 21,317.70
  4. Step 4: Simplify right side
    39,222.65x = 1,153,876,045.11
  5. Step 5: Solve for x
    x = 1,153,876,045.11/39,222.65
  6. Step 6: Final answer
    x = 29,418.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.