Home / 39,848.79-54,990.90-21,943.43

Finding the Fourth Proportional to 39,848.79, 54,990.90 and 21,943.43

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Solution

The fourth proportional to 39,848.79, 54,990.90 and 21,943.43 is: 30,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,848.79 : 54,990.90 = 21,943.43 : x
  2. Step 2: Convert to fraction form
    39,848.79/54,990.90 = 21,943.43/x
  3. Step 3: Cross multiply
    39,848.79x = 54,990.90 × 21,943.43
  4. Step 4: Simplify right side
    39,848.79x = 1,206,688,689.83
  5. Step 5: Solve for x
    x = 1,206,688,689.83/39,848.79
  6. Step 6: Final answer
    x = 30,281.69

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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.