Home / 23,090.79-31,865.23-12,480.39

Finding the Fourth Proportional to 23,090.79, 31,865.23 and 12,480.39

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Solution

The fourth proportional to 23,090.79, 31,865.23 and 12,480.39 is: 17,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,090.79 : 31,865.23 = 12,480.39 : x
  2. Step 2: Convert to fraction form
    23,090.79/31,865.23 = 12,480.39/x
  3. Step 3: Cross multiply
    23,090.79x = 31,865.23 × 12,480.39
  4. Step 4: Simplify right side
    23,090.79x = 397,690,497.84
  5. Step 5: Solve for x
    x = 397,690,497.84/23,090.79
  6. Step 6: Final answer
    x = 17,222.91

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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.