Home / 12,800.67-17,664.45-7,135.13

Finding the Fourth Proportional to 12,800.67, 17,664.45 and 7,135.13

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Solution

The fourth proportional to 12,800.67, 17,664.45 and 7,135.13 is: 9,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.67 : 17,664.45 = 7,135.13 : x
  2. Step 2: Convert to fraction form
    12,800.67/17,664.45 = 7,135.13/x
  3. Step 3: Cross multiply
    12,800.67x = 17,664.45 × 7,135.13
  4. Step 4: Simplify right side
    12,800.67x = 126,038,058.81
  5. Step 5: Solve for x
    x = 126,038,058.81/12,800.67
  6. Step 6: Final answer
    x = 9,846.21

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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.