Home / 10,520.67-15,781.05-2,729.55

Finding the Fourth Proportional to 10,520.67, 15,781.05 and 2,729.55

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Solution

The fourth proportional to 10,520.67, 15,781.05 and 2,729.55 is: 4,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.67 : 15,781.05 = 2,729.55 : x
  2. Step 2: Convert to fraction form
    10,520.67/15,781.05 = 2,729.55/x
  3. Step 3: Cross multiply
    10,520.67x = 15,781.05 × 2,729.55
  4. Step 4: Simplify right side
    10,520.67x = 43,075,165.03
  5. Step 5: Solve for x
    x = 43,075,165.03/10,520.67
  6. Step 6: Final answer
    x = 4,094.34

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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.