Home / 26,638.61-39,947.52-9,989.56

Finding the Fourth Proportional to 26,638.61, 39,947.52 and 9,989.56

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Solution

The fourth proportional to 26,638.61, 39,947.52 and 9,989.56 is: 14,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,638.61 : 39,947.52 = 9,989.56 : x
  2. Step 2: Convert to fraction form
    26,638.61/39,947.52 = 9,989.56/x
  3. Step 3: Cross multiply
    26,638.61x = 39,947.52 × 9,989.56
  4. Step 4: Simplify right side
    26,638.61x = 399,058,147.89
  5. Step 5: Solve for x
    x = 399,058,147.89/26,638.61
  6. Step 6: Final answer
    x = 14,980.44

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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.