Home / 39,848.50-54,990.88-21,943.55

Finding the Fourth Proportional to 39,848.50, 54,990.88 and 21,943.55

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Solution

The fourth proportional to 39,848.50, 54,990.88 and 21,943.55 is: 30,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,848.50 : 54,990.88 = 21,943.55 : x
  2. Step 2: Convert to fraction form
    39,848.50/54,990.88 = 21,943.55/x
  3. Step 3: Cross multiply
    39,848.50x = 54,990.88 × 21,943.55
  4. Step 4: Simplify right side
    39,848.50x = 1,206,695,124.82
  5. Step 5: Solve for x
    x = 1,206,695,124.82/39,848.50
  6. Step 6: Final answer
    x = 30,282.07

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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.