Home / 14,886.32-20,543.39-8,172.57

Finding the Fourth Proportional to 14,886.32, 20,543.39 and 8,172.57

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Solution

The fourth proportional to 14,886.32, 20,543.39 and 8,172.57 is: 11,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.32 : 20,543.39 = 8,172.57 : x
  2. Step 2: Convert to fraction form
    14,886.32/20,543.39 = 8,172.57/x
  3. Step 3: Cross multiply
    14,886.32x = 20,543.39 × 8,172.57
  4. Step 4: Simplify right side
    14,886.32x = 167,892,251.95
  5. Step 5: Solve for x
    x = 167,892,251.95/14,886.32
  6. Step 6: Final answer
    x = 11,278.29

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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.