Home / 38,436.11-53,036.52-21,438.36

Finding the Fourth Proportional to 38,436.11, 53,036.52 and 21,438.36

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Solution

The fourth proportional to 38,436.11, 53,036.52 and 21,438.36 is: 29,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,436.11 : 53,036.52 = 21,438.36 : x
  2. Step 2: Convert to fraction form
    38,436.11/53,036.52 = 21,438.36/x
  3. Step 3: Cross multiply
    38,436.11x = 53,036.52 × 21,438.36
  4. Step 4: Simplify right side
    38,436.11x = 1,137,016,008.91
  5. Step 5: Solve for x
    x = 1,137,016,008.91/38,436.11
  6. Step 6: Final answer
    x = 29,581.98

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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.