Home / 21,934.11-30,269.28-12,503.28

Finding the Fourth Proportional to 21,934.11, 30,269.28 and 12,503.28

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Solution

The fourth proportional to 21,934.11, 30,269.28 and 12,503.28 is: 17,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.11 : 30,269.28 = 12,503.28 : x
  2. Step 2: Convert to fraction form
    21,934.11/30,269.28 = 12,503.28/x
  3. Step 3: Cross multiply
    21,934.11x = 30,269.28 × 12,503.28
  4. Step 4: Simplify right side
    21,934.11x = 378,465,283.24
  5. Step 5: Solve for x
    x = 378,465,283.24/21,934.11
  6. Step 6: Final answer
    x = 17,254.65

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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.