Home / 12,653.76-17,458.80-8,176.08

Finding the Fourth Proportional to 12,653.76, 17,458.80 and 8,176.08

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Solution

The fourth proportional to 12,653.76, 17,458.80 and 8,176.08 is: 11,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,653.76 : 17,458.80 = 8,176.08 : x
  2. Step 2: Convert to fraction form
    12,653.76/17,458.80 = 8,176.08/x
  3. Step 3: Cross multiply
    12,653.76x = 17,458.80 × 8,176.08
  4. Step 4: Simplify right side
    12,653.76x = 142,744,545.50
  5. Step 5: Solve for x
    x = 142,744,545.50/12,653.76
  6. Step 6: Final answer
    x = 11,280.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.