Home / 14,376.79-21,568.26-8,139.74

Finding the Fourth Proportional to 14,376.79, 21,568.26 and 8,139.74

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Solution

The fourth proportional to 14,376.79, 21,568.26 and 8,139.74 is: 12,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,376.79 : 21,568.26 = 8,139.74 : x
  2. Step 2: Convert to fraction form
    14,376.79/21,568.26 = 8,139.74/x
  3. Step 3: Cross multiply
    14,376.79x = 21,568.26 × 8,139.74
  4. Step 4: Simplify right side
    14,376.79x = 175,560,061.21
  5. Step 5: Solve for x
    x = 175,560,061.21/14,376.79
  6. Step 6: Final answer
    x = 12,211.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.