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Finding the Fourth Proportional to 12,484.64, 18,730.20 and 6,244.40

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Solution

The fourth proportional to 12,484.64, 18,730.20 and 6,244.40 is: 9,368.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.64 : 18,730.20 = 6,244.40 : x
  2. Step 2: Convert to fraction form
    12,484.64/18,730.20 = 6,244.40/x
  3. Step 3: Cross multiply
    12,484.64x = 18,730.20 × 6,244.40
  4. Step 4: Simplify right side
    12,484.64x = 116,958,767.23
  5. Step 5: Solve for x
    x = 116,958,767.23/12,484.64
  6. Step 6: Final answer
    x = 9,368.22

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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.