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Finding the Fourth Proportional to 12,007.76, 18,014.70 and 4,612.76

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Solution

The fourth proportional to 12,007.76, 18,014.70 and 4,612.76 is: 6,920.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.76 : 18,014.70 = 4,612.76 : x
  2. Step 2: Convert to fraction form
    12,007.76/18,014.70 = 4,612.76/x
  3. Step 3: Cross multiply
    12,007.76x = 18,014.70 × 4,612.76
  4. Step 4: Simplify right side
    12,007.76x = 83,097,397.50
  5. Step 5: Solve for x
    x = 83,097,397.50/12,007.76
  6. Step 6: Final answer
    x = 6,920.31

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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.