Home / 15,274.32-21,079.56-8,559.72

Finding the Fourth Proportional to 15,274.32, 21,079.56 and 8,559.72

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Solution

The fourth proportional to 15,274.32, 21,079.56 and 8,559.72 is: 11,812.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.32 : 21,079.56 = 8,559.72 : x
  2. Step 2: Convert to fraction form
    15,274.32/21,079.56 = 8,559.72/x
  3. Step 3: Cross multiply
    15,274.32x = 21,079.56 × 8,559.72
  4. Step 4: Simplify right side
    15,274.32x = 180,435,131.32
  5. Step 5: Solve for x
    x = 180,435,131.32/15,274.32
  6. Step 6: Final answer
    x = 11,812.97

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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.