Home / 22,707.85-31,331.87-13,272.09

Finding the Fourth Proportional to 22,707.85, 31,331.87 and 13,272.09

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Solution

The fourth proportional to 22,707.85, 31,331.87 and 13,272.09 is: 18,312.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,707.85 : 31,331.87 = 13,272.09 : x
  2. Step 2: Convert to fraction form
    22,707.85/31,331.87 = 13,272.09/x
  3. Step 3: Cross multiply
    22,707.85x = 31,331.87 × 13,272.09
  4. Step 4: Simplify right side
    22,707.85x = 415,839,332.15
  5. Step 5: Solve for x
    x = 415,839,332.15/22,707.85
  6. Step 6: Final answer
    x = 18,312.58

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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.