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Finding the Fourth Proportional to 12,657.65, 18,907.55 and 9,377.15

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Solution

The fourth proportional to 12,657.65, 18,907.55 and 9,377.15 is: 14,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.65 : 18,907.55 = 9,377.15 : x
  2. Step 2: Convert to fraction form
    12,657.65/18,907.55 = 9,377.15/x
  3. Step 3: Cross multiply
    12,657.65x = 18,907.55 × 9,377.15
  4. Step 4: Simplify right side
    12,657.65x = 177,298,826.22
  5. Step 5: Solve for x
    x = 177,298,826.22/12,657.65
  6. Step 6: Final answer
    x = 14,007.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.