Home / 15,382.71-21,216.06-11,134.40

Finding the Fourth Proportional to 15,382.71, 21,216.06 and 11,134.40

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Solution

The fourth proportional to 15,382.71, 21,216.06 and 11,134.40 is: 15,356.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.71 : 21,216.06 = 11,134.40 : x
  2. Step 2: Convert to fraction form
    15,382.71/21,216.06 = 11,134.40/x
  3. Step 3: Cross multiply
    15,382.71x = 21,216.06 × 11,134.40
  4. Step 4: Simplify right side
    15,382.71x = 236,227,992.38
  5. Step 5: Solve for x
    x = 236,227,992.38/15,382.71
  6. Step 6: Final answer
    x = 15,356.72

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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.