Home / 14,886.81-20,544.13-8,172.55

Finding the Fourth Proportional to 14,886.81, 20,544.13 and 8,172.55

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Solution

The fourth proportional to 14,886.81, 20,544.13 and 8,172.55 is: 11,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.81 : 20,544.13 = 8,172.55 : x
  2. Step 2: Convert to fraction form
    14,886.81/20,544.13 = 8,172.55/x
  3. Step 3: Cross multiply
    14,886.81x = 20,544.13 × 8,172.55
  4. Step 4: Simplify right side
    14,886.81x = 167,897,849.97
  5. Step 5: Solve for x
    x = 167,897,849.97/14,886.81
  6. Step 6: Final answer
    x = 11,278.30

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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.