Home / 39,592.40-54,638.82-21,688.40

Finding the Fourth Proportional to 39,592.40, 54,638.82 and 21,688.40

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Solution

The fourth proportional to 39,592.40, 54,638.82 and 21,688.40 is: 29,930.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,592.40 : 54,638.82 = 21,688.40 : x
  2. Step 2: Convert to fraction form
    39,592.40/54,638.82 = 21,688.40/x
  3. Step 3: Cross multiply
    39,592.40x = 54,638.82 × 21,688.40
  4. Step 4: Simplify right side
    39,592.40x = 1,185,028,720.29
  5. Step 5: Solve for x
    x = 1,185,028,720.29/39,592.40
  6. Step 6: Final answer
    x = 29,930.72

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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.