Home / 15,883.20-23,824.80-12,578.40

Finding the Fourth Proportional to 15,883.20, 23,824.80 and 12,578.40

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Solution

The fourth proportional to 15,883.20, 23,824.80 and 12,578.40 is: 18,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.20 : 23,824.80 = 12,578.40 : x
  2. Step 2: Convert to fraction form
    15,883.20/23,824.80 = 12,578.40/x
  3. Step 3: Cross multiply
    15,883.20x = 23,824.80 × 12,578.40
  4. Step 4: Simplify right side
    15,883.20x = 299,677,864.32
  5. Step 5: Solve for x
    x = 299,677,864.32/15,883.20
  6. Step 6: Final answer
    x = 18,867.60

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Similar ratio
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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.