Home / 14,375.85-19,839.11-7,827.78

Finding the Fourth Proportional to 14,375.85, 19,839.11 and 7,827.78

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Solution

The fourth proportional to 14,375.85, 19,839.11 and 7,827.78 is: 10,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,375.85 : 19,839.11 = 7,827.78 : x
  2. Step 2: Convert to fraction form
    14,375.85/19,839.11 = 7,827.78/x
  3. Step 3: Cross multiply
    14,375.85x = 19,839.11 × 7,827.78
  4. Step 4: Simplify right side
    14,375.85x = 155,296,117.26
  5. Step 5: Solve for x
    x = 155,296,117.26/14,375.85
  6. Step 6: Final answer
    x = 10,802.57

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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.