Home / 15,754.90-21,744.66-9,785.20

Finding the Fourth Proportional to 15,754.90, 21,744.66 and 9,785.20

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Solution

The fourth proportional to 15,754.90, 21,744.66 and 9,785.20 is: 13,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,754.90 : 21,744.66 = 9,785.20 : x
  2. Step 2: Convert to fraction form
    15,754.90/21,744.66 = 9,785.20/x
  3. Step 3: Cross multiply
    15,754.90x = 21,744.66 × 9,785.20
  4. Step 4: Simplify right side
    15,754.90x = 212,775,847.03
  5. Step 5: Solve for x
    x = 212,775,847.03/15,754.90
  6. Step 6: Final answer
    x = 13,505.38

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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.