Home / 15,278.40-21,085.06-11,494.79

Finding the Fourth Proportional to 15,278.40, 21,085.06 and 11,494.79

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Solution

The fourth proportional to 15,278.40, 21,085.06 and 11,494.79 is: 15,863.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.40 : 21,085.06 = 11,494.79 : x
  2. Step 2: Convert to fraction form
    15,278.40/21,085.06 = 11,494.79/x
  3. Step 3: Cross multiply
    15,278.40x = 21,085.06 × 11,494.79
  4. Step 4: Simplify right side
    15,278.40x = 242,368,244.00
  5. Step 5: Solve for x
    x = 242,368,244.00/15,278.40
  6. Step 6: Final answer
    x = 15,863.46

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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.