Home / 26,389.56-39,578.16-12,359.25

Finding the Fourth Proportional to 26,389.56, 39,578.16 and 12,359.25

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Solution

The fourth proportional to 26,389.56, 39,578.16 and 12,359.25 is: 18,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,389.56 : 39,578.16 = 12,359.25 : x
  2. Step 2: Convert to fraction form
    26,389.56/39,578.16 = 12,359.25/x
  3. Step 3: Cross multiply
    26,389.56x = 39,578.16 × 12,359.25
  4. Step 4: Simplify right side
    26,389.56x = 489,156,373.98
  5. Step 5: Solve for x
    x = 489,156,373.98/26,389.56
  6. Step 6: Final answer
    x = 18,535.98

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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.