Home / 38,215.61-52,736.80-21,218.97

Finding the Fourth Proportional to 38,215.61, 52,736.80 and 21,218.97

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Solution

The fourth proportional to 38,215.61, 52,736.80 and 21,218.97 is: 29,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,215.61 : 52,736.80 = 21,218.97 : x
  2. Step 2: Convert to fraction form
    38,215.61/52,736.80 = 21,218.97/x
  3. Step 3: Cross multiply
    38,215.61x = 52,736.80 × 21,218.97
  4. Step 4: Simplify right side
    38,215.61x = 1,119,020,577.10
  5. Step 5: Solve for x
    x = 1,119,020,577.10/38,215.61
  6. Step 6: Final answer
    x = 29,281.77

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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.