Home / 38,711.80-58,127.10-21,215.80

Finding the Fourth Proportional to 38,711.80, 58,127.10 and 21,215.80

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Solution

The fourth proportional to 38,711.80, 58,127.10 and 21,215.80 is: 31,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,711.80 : 58,127.10 = 21,215.80 : x
  2. Step 2: Convert to fraction form
    38,711.80/58,127.10 = 21,215.80/x
  3. Step 3: Cross multiply
    38,711.80x = 58,127.10 × 21,215.80
  4. Step 4: Simplify right side
    38,711.80x = 1,233,212,928.18
  5. Step 5: Solve for x
    x = 1,233,212,928.18/38,711.80
  6. Step 6: Final answer
    x = 31,856.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.