Home / 21,754.39-30,023.70-12,801.46

Finding the Fourth Proportional to 21,754.39, 30,023.70 and 12,801.46

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Solution

The fourth proportional to 21,754.39, 30,023.70 and 12,801.46 is: 17,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.39 : 30,023.70 = 12,801.46 : x
  2. Step 2: Convert to fraction form
    21,754.39/30,023.70 = 12,801.46/x
  3. Step 3: Cross multiply
    21,754.39x = 30,023.70 × 12,801.46
  4. Step 4: Simplify right side
    21,754.39x = 384,347,044.48
  5. Step 5: Solve for x
    x = 384,347,044.48/21,754.39
  6. Step 6: Final answer
    x = 17,667.57

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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.