Home / 22,938.80-31,653.64-12,865.84

Finding the Fourth Proportional to 22,938.80, 31,653.64 and 12,865.84

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Solution

The fourth proportional to 22,938.80, 31,653.64 and 12,865.84 is: 17,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,938.80 : 31,653.64 = 12,865.84 : x
  2. Step 2: Convert to fraction form
    22,938.80/31,653.64 = 12,865.84/x
  3. Step 3: Cross multiply
    22,938.80x = 31,653.64 × 12,865.84
  4. Step 4: Simplify right side
    22,938.80x = 407,250,667.66
  5. Step 5: Solve for x
    x = 407,250,667.66/22,938.80
  6. Step 6: Final answer
    x = 17,753.79

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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.