Home / 15,772.51-21,765.27-9,057.61

Finding the Fourth Proportional to 15,772.51, 21,765.27 and 9,057.61

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Solution

The fourth proportional to 15,772.51, 21,765.27 and 9,057.61 is: 12,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.51 : 21,765.27 = 9,057.61 : x
  2. Step 2: Convert to fraction form
    15,772.51/21,765.27 = 9,057.61/x
  3. Step 3: Cross multiply
    15,772.51x = 21,765.27 × 9,057.61
  4. Step 4: Simplify right side
    15,772.51x = 197,141,327.20
  5. Step 5: Solve for x
    x = 197,141,327.20/15,772.51
  6. Step 6: Final answer
    x = 12,499.05

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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.