Home / 15,932.96-21,986.63-9,218.70

Finding the Fourth Proportional to 15,932.96, 21,986.63 and 9,218.70

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Solution

The fourth proportional to 15,932.96, 21,986.63 and 9,218.70 is: 12,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,932.96 : 21,986.63 = 9,218.70 : x
  2. Step 2: Convert to fraction form
    15,932.96/21,986.63 = 9,218.70/x
  3. Step 3: Cross multiply
    15,932.96x = 21,986.63 × 9,218.70
  4. Step 4: Simplify right side
    15,932.96x = 202,688,013.00
  5. Step 5: Solve for x
    x = 202,688,013.00/15,932.96
  6. Step 6: Final answer
    x = 12,721.31

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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.