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Finding the Fourth Proportional to 24,578.40, 36,842.40 and 12,079.20

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Solution

The fourth proportional to 24,578.40, 36,842.40 and 12,079.20 is: 18,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,578.40 : 36,842.40 = 12,079.20 : x
  2. Step 2: Convert to fraction form
    24,578.40/36,842.40 = 12,079.20/x
  3. Step 3: Cross multiply
    24,578.40x = 36,842.40 × 12,079.20
  4. Step 4: Simplify right side
    24,578.40x = 445,026,718.08
  5. Step 5: Solve for x
    x = 445,026,718.08/24,578.40
  6. Step 6: Final answer
    x = 18,106.42

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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.