Home / 15,991.56-22,068.09-9,278.31

Finding the Fourth Proportional to 15,991.56, 22,068.09 and 9,278.31

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Solution

The fourth proportional to 15,991.56, 22,068.09 and 9,278.31 is: 12,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.56 : 22,068.09 = 9,278.31 : x
  2. Step 2: Convert to fraction form
    15,991.56/22,068.09 = 9,278.31/x
  3. Step 3: Cross multiply
    15,991.56x = 22,068.09 × 9,278.31
  4. Step 4: Simplify right side
    15,991.56x = 204,754,580.13
  5. Step 5: Solve for x
    x = 204,754,580.13/15,991.56
  6. Step 6: Final answer
    x = 12,803.92

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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.