Home / 22,961.58-31,684.62-15,406.40

Finding the Fourth Proportional to 22,961.58, 31,684.62 and 15,406.40

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Solution

The fourth proportional to 22,961.58, 31,684.62 and 15,406.40 is: 21,259.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,961.58 : 31,684.62 = 15,406.40 : x
  2. Step 2: Convert to fraction form
    22,961.58/31,684.62 = 15,406.40/x
  3. Step 3: Cross multiply
    22,961.58x = 31,684.62 × 15,406.40
  4. Step 4: Simplify right side
    22,961.58x = 488,145,979.89
  5. Step 5: Solve for x
    x = 488,145,979.89/22,961.58
  6. Step 6: Final answer
    x = 21,259.25

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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.