Home / 13,369.74-20,061.45-5,478

Finding the Fourth Proportional to 13,369.74, 20,061.45 and 5,478

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Solution

The fourth proportional to 13,369.74, 20,061.45 and 5,478 is: 8,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.74 : 20,061.45 = 5,478 : x
  2. Step 2: Convert to fraction form
    13,369.74/20,061.45 = 5,478/x
  3. Step 3: Cross multiply
    13,369.74x = 20,061.45 × 5,478
  4. Step 4: Simplify right side
    13,369.74x = 109,896,623.10
  5. Step 5: Solve for x
    x = 109,896,623.10/13,369.74
  6. Step 6: Final answer
    x = 8,219.80

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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.