Home / 38,386-52,972.80-21,619.36

Finding the Fourth Proportional to 38,386, 52,972.80 and 21,619.36

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Solution

The fourth proportional to 38,386, 52,972.80 and 21,619.36 is: 29,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,386 : 52,972.80 = 21,619.36 : x
  2. Step 2: Convert to fraction form
    38,386/52,972.80 = 21,619.36/x
  3. Step 3: Cross multiply
    38,386x = 52,972.80 × 21,619.36
  4. Step 4: Simplify right side
    38,386x = 1,145,238,033.41
  5. Step 5: Solve for x
    x = 1,145,238,033.41/38,386
  6. Step 6: Final answer
    x = 29,834.78

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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.