Home / 14,140.56-19,515.70-8,172.28

Finding the Fourth Proportional to 14,140.56, 19,515.70 and 8,172.28

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Solution

The fourth proportional to 14,140.56, 19,515.70 and 8,172.28 is: 11,278.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.56 : 19,515.70 = 8,172.28 : x
  2. Step 2: Convert to fraction form
    14,140.56/19,515.70 = 8,172.28/x
  3. Step 3: Cross multiply
    14,140.56x = 19,515.70 × 8,172.28
  4. Step 4: Simplify right side
    14,140.56x = 159,487,764.80
  5. Step 5: Solve for x
    x = 159,487,764.80/14,140.56
  6. Step 6: Final answer
    x = 11,278.74

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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.