Home / 15,441.28-21,308.88-8,367.70

Finding the Fourth Proportional to 15,441.28, 21,308.88 and 8,367.70

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Solution

The fourth proportional to 15,441.28, 21,308.88 and 8,367.70 is: 11,547.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.28 : 21,308.88 = 8,367.70 : x
  2. Step 2: Convert to fraction form
    15,441.28/21,308.88 = 8,367.70/x
  3. Step 3: Cross multiply
    15,441.28x = 21,308.88 × 8,367.70
  4. Step 4: Simplify right side
    15,441.28x = 178,306,315.18
  5. Step 5: Solve for x
    x = 178,306,315.18/15,441.28
  6. Step 6: Final answer
    x = 11,547.38

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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.