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Finding the Fourth Proportional to 16,480.32, 24,720.48 and 7,721.40

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Solution

The fourth proportional to 16,480.32, 24,720.48 and 7,721.40 is: 11,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,480.32 : 24,720.48 = 7,721.40 : x
  2. Step 2: Convert to fraction form
    16,480.32/24,720.48 = 7,721.40/x
  3. Step 3: Cross multiply
    16,480.32x = 24,720.48 × 7,721.40
  4. Step 4: Simplify right side
    16,480.32x = 190,876,714.27
  5. Step 5: Solve for x
    x = 190,876,714.27/16,480.32
  6. Step 6: Final answer
    x = 11,582.10

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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.