Home / 15,340.42-21,169.02-9,382.06

Finding the Fourth Proportional to 15,340.42, 21,169.02 and 9,382.06

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Solution

The fourth proportional to 15,340.42, 21,169.02 and 9,382.06 is: 12,946.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.42 : 21,169.02 = 9,382.06 : x
  2. Step 2: Convert to fraction form
    15,340.42/21,169.02 = 9,382.06/x
  3. Step 3: Cross multiply
    15,340.42x = 21,169.02 × 9,382.06
  4. Step 4: Simplify right side
    15,340.42x = 198,609,015.78
  5. Step 5: Solve for x
    x = 198,609,015.78/15,340.42
  6. Step 6: Final answer
    x = 12,946.78

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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.