Home / 38,203.36-52,721.12-21,436

Finding the Fourth Proportional to 38,203.36, 52,721.12 and 21,436

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Solution

The fourth proportional to 38,203.36, 52,721.12 and 21,436 is: 29,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,203.36 : 52,721.12 = 21,436 : x
  2. Step 2: Convert to fraction form
    38,203.36/52,721.12 = 21,436/x
  3. Step 3: Cross multiply
    38,203.36x = 52,721.12 × 21,436
  4. Step 4: Simplify right side
    38,203.36x = 1,130,129,928.32
  5. Step 5: Solve for x
    x = 1,130,129,928.32/38,203.36
  6. Step 6: Final answer
    x = 29,581.95

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Double scale
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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.