Home / 14,886.32-20,543.36-8,172.56

Finding the Fourth Proportional to 14,886.32, 20,543.36 and 8,172.56

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Solution

The fourth proportional to 14,886.32, 20,543.36 and 8,172.56 is: 11,278.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.32 : 20,543.36 = 8,172.56 : x
  2. Step 2: Convert to fraction form
    14,886.32/20,543.36 = 8,172.56/x
  3. Step 3: Cross multiply
    14,886.32x = 20,543.36 × 8,172.56
  4. Step 4: Simplify right side
    14,886.32x = 167,891,921.65
  5. Step 5: Solve for x
    x = 167,891,921.65/14,886.32
  6. Step 6: Final answer
    x = 11,278.27

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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.