Home / 38,275.31-52,813.55-21,279.08

Finding the Fourth Proportional to 38,275.31, 52,813.55 and 21,279.08

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Solution

The fourth proportional to 38,275.31, 52,813.55 and 21,279.08 is: 29,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,275.31 : 52,813.55 = 21,279.08 : x
  2. Step 2: Convert to fraction form
    38,275.31/52,813.55 = 21,279.08/x
  3. Step 3: Cross multiply
    38,275.31x = 52,813.55 × 21,279.08
  4. Step 4: Simplify right side
    38,275.31x = 1,123,823,649.14
  5. Step 5: Solve for x
    x = 1,123,823,649.14/38,275.31
  6. Step 6: Final answer
    x = 29,361.58

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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.