Home / 39,211.05-54,111.48-21,306.05

Finding the Fourth Proportional to 39,211.05, 54,111.48 and 21,306.05

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Solution

The fourth proportional to 39,211.05, 54,111.48 and 21,306.05 is: 29,402.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,211.05 : 54,111.48 = 21,306.05 : x
  2. Step 2: Convert to fraction form
    39,211.05/54,111.48 = 21,306.05/x
  3. Step 3: Cross multiply
    39,211.05x = 54,111.48 × 21,306.05
  4. Step 4: Simplify right side
    39,211.05x = 1,152,901,750.92
  5. Step 5: Solve for x
    x = 1,152,901,750.92/39,211.05
  6. Step 6: Final answer
    x = 29,402.47

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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.