Home / 39,219.62-54,123.05-21,314.63

Finding the Fourth Proportional to 39,219.62, 54,123.05 and 21,314.63

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Solution

The fourth proportional to 39,219.62, 54,123.05 and 21,314.63 is: 29,414.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.62 : 54,123.05 = 21,314.63 : x
  2. Step 2: Convert to fraction form
    39,219.62/54,123.05 = 21,314.63/x
  3. Step 3: Cross multiply
    39,219.62x = 54,123.05 × 21,314.63
  4. Step 4: Simplify right side
    39,219.62x = 1,153,612,838.51
  5. Step 5: Solve for x
    x = 1,153,612,838.51/39,219.62
  6. Step 6: Final answer
    x = 29,414.18

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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.