Home / 21,904.70-30,228.45-11,833.13

Finding the Fourth Proportional to 21,904.70, 30,228.45 and 11,833.13

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Solution

The fourth proportional to 21,904.70, 30,228.45 and 11,833.13 is: 16,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.70 : 30,228.45 = 11,833.13 : x
  2. Step 2: Convert to fraction form
    21,904.70/30,228.45 = 11,833.13/x
  3. Step 3: Cross multiply
    21,904.70x = 30,228.45 × 11,833.13
  4. Step 4: Simplify right side
    21,904.70x = 357,697,178.55
  5. Step 5: Solve for x
    x = 357,697,178.55/21,904.70
  6. Step 6: Final answer
    x = 16,329.70

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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.