Home / 15,724.88-21,697.91-9,351.35

Finding the Fourth Proportional to 15,724.88, 21,697.91 and 9,351.35

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Solution

The fourth proportional to 15,724.88, 21,697.91 and 9,351.35 is: 12,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.88 : 21,697.91 = 9,351.35 : x
  2. Step 2: Convert to fraction form
    15,724.88/21,697.91 = 9,351.35/x
  3. Step 3: Cross multiply
    15,724.88x = 21,697.91 × 9,351.35
  4. Step 4: Simplify right side
    15,724.88x = 202,904,595.43
  5. Step 5: Solve for x
    x = 202,904,595.43/15,724.88
  6. Step 6: Final answer
    x = 12,903.41

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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.