Home / 15,660.47-21,610.77-9,376.31

Finding the Fourth Proportional to 15,660.47, 21,610.77 and 9,376.31

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Solution

The fourth proportional to 15,660.47, 21,610.77 and 9,376.31 is: 12,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.47 : 21,610.77 = 9,376.31 : x
  2. Step 2: Convert to fraction form
    15,660.47/21,610.77 = 9,376.31/x
  3. Step 3: Cross multiply
    15,660.47x = 21,610.77 × 9,376.31
  4. Step 4: Simplify right side
    15,660.47x = 202,629,278.86
  5. Step 5: Solve for x
    x = 202,629,278.86/15,660.47
  6. Step 6: Final answer
    x = 12,938.90

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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.