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Finding the Fourth Proportional to 16,478.64, 24,721.08 and 6,618.69

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Solution

The fourth proportional to 16,478.64, 24,721.08 and 6,618.69 is: 9,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,478.64 : 24,721.08 = 6,618.69 : x
  2. Step 2: Convert to fraction form
    16,478.64/24,721.08 = 6,618.69/x
  3. Step 3: Cross multiply
    16,478.64x = 24,721.08 × 6,618.69
  4. Step 4: Simplify right side
    16,478.64x = 163,621,164.99
  5. Step 5: Solve for x
    x = 163,621,164.99/16,478.64
  6. Step 6: Final answer
    x = 9,929.29

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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.