Home / 26,638.38-39,947.11-9,989.34

Finding the Fourth Proportional to 26,638.38, 39,947.11 and 9,989.34

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Solution

The fourth proportional to 26,638.38, 39,947.11 and 9,989.34 is: 14,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,638.38 : 39,947.11 = 9,989.34 : x
  2. Step 2: Convert to fraction form
    26,638.38/39,947.11 = 9,989.34/x
  3. Step 3: Cross multiply
    26,638.38x = 39,947.11 × 9,989.34
  4. Step 4: Simplify right side
    26,638.38x = 399,045,089.03
  5. Step 5: Solve for x
    x = 399,045,089.03/26,638.38
  6. Step 6: Final answer
    x = 14,980.08

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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.