Home / 13,672.74-18,870.39-8,366.70

Finding the Fourth Proportional to 13,672.74, 18,870.39 and 8,366.70

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Solution

The fourth proportional to 13,672.74, 18,870.39 and 8,366.70 is: 11,547.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.74 : 18,870.39 = 8,366.70 : x
  2. Step 2: Convert to fraction form
    13,672.74/18,870.39 = 8,366.70/x
  3. Step 3: Cross multiply
    13,672.74x = 18,870.39 × 8,366.70
  4. Step 4: Simplify right side
    13,672.74x = 157,882,892.01
  5. Step 5: Solve for x
    x = 157,882,892.01/13,672.74
  6. Step 6: Final answer
    x = 11,547.28

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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.