Home / 13,108.80-18,089.51-7,442.81

Finding the Fourth Proportional to 13,108.80, 18,089.51 and 7,442.81

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Solution

The fourth proportional to 13,108.80, 18,089.51 and 7,442.81 is: 10,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.80 : 18,089.51 = 7,442.81 : x
  2. Step 2: Convert to fraction form
    13,108.80/18,089.51 = 7,442.81/x
  3. Step 3: Cross multiply
    13,108.80x = 18,089.51 × 7,442.81
  4. Step 4: Simplify right side
    13,108.80x = 134,636,658.26
  5. Step 5: Solve for x
    x = 134,636,658.26/13,108.80
  6. Step 6: Final answer
    x = 10,270.71

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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.