Home / 12,776.92-17,632.98-7,111.60

Finding the Fourth Proportional to 12,776.92, 17,632.98 and 7,111.60

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Solution

The fourth proportional to 12,776.92, 17,632.98 and 7,111.60 is: 9,814.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.92 : 17,632.98 = 7,111.60 : x
  2. Step 2: Convert to fraction form
    12,776.92/17,632.98 = 7,111.60/x
  3. Step 3: Cross multiply
    12,776.92x = 17,632.98 × 7,111.60
  4. Step 4: Simplify right side
    12,776.92x = 125,398,656.49
  5. Step 5: Solve for x
    x = 125,398,656.49/12,776.92
  6. Step 6: Final answer
    x = 9,814.47

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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.