Home / 15,243.32-21,036.38-8,955.64

Finding the Fourth Proportional to 15,243.32, 21,036.38 and 8,955.64

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Solution

The fourth proportional to 15,243.32, 21,036.38 and 8,955.64 is: 12,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.32 : 21,036.38 = 8,955.64 : x
  2. Step 2: Convert to fraction form
    15,243.32/21,036.38 = 8,955.64/x
  3. Step 3: Cross multiply
    15,243.32x = 21,036.38 × 8,955.64
  4. Step 4: Simplify right side
    15,243.32x = 188,394,246.18
  5. Step 5: Solve for x
    x = 188,394,246.18/15,243.32
  6. Step 6: Final answer
    x = 12,359.13

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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.