Home / 15,932.88-21,985.65-9,220.68

Finding the Fourth Proportional to 15,932.88, 21,985.65 and 9,220.68

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Solution

The fourth proportional to 15,932.88, 21,985.65 and 9,220.68 is: 12,723.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,932.88 : 21,985.65 = 9,220.68 : x
  2. Step 2: Convert to fraction form
    15,932.88/21,985.65 = 9,220.68/x
  3. Step 3: Cross multiply
    15,932.88x = 21,985.65 × 9,220.68
  4. Step 4: Simplify right side
    15,932.88x = 202,722,643.24
  5. Step 5: Solve for x
    x = 202,722,643.24/15,932.88
  6. Step 6: Final answer
    x = 12,723.54

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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.