Home / 22,686.75-31,308.93-13,260.78

Finding the Fourth Proportional to 22,686.75, 31,308.93 and 13,260.78

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Solution

The fourth proportional to 22,686.75, 31,308.93 and 13,260.78 is: 18,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,686.75 : 31,308.93 = 13,260.78 : x
  2. Step 2: Convert to fraction form
    22,686.75/31,308.93 = 13,260.78/x
  3. Step 3: Cross multiply
    22,686.75x = 31,308.93 × 13,260.78
  4. Step 4: Simplify right side
    22,686.75x = 415,180,832.77
  5. Step 5: Solve for x
    x = 415,180,832.77/22,686.75
  6. Step 6: Final answer
    x = 18,300.59

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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.