Home / 21,934.92-30,270.06-12,503.28

Finding the Fourth Proportional to 21,934.92, 30,270.06 and 12,503.28

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Solution

The fourth proportional to 21,934.92, 30,270.06 and 12,503.28 is: 17,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.92 : 30,270.06 = 12,503.28 : x
  2. Step 2: Convert to fraction form
    21,934.92/30,270.06 = 12,503.28/x
  3. Step 3: Cross multiply
    21,934.92x = 30,270.06 × 12,503.28
  4. Step 4: Simplify right side
    21,934.92x = 378,475,035.80
  5. Step 5: Solve for x
    x = 378,475,035.80/21,934.92
  6. Step 6: Final answer
    x = 17,254.45

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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.