Home / 21,935.85-30,271.39-11,864.31

Finding the Fourth Proportional to 21,935.85, 30,271.39 and 11,864.31

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Solution

The fourth proportional to 21,935.85, 30,271.39 and 11,864.31 is: 16,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.85 : 30,271.39 = 11,864.31 : x
  2. Step 2: Convert to fraction form
    21,935.85/30,271.39 = 11,864.31/x
  3. Step 3: Cross multiply
    21,935.85x = 30,271.39 × 11,864.31
  4. Step 4: Simplify right side
    21,935.85x = 359,149,155.09
  5. Step 5: Solve for x
    x = 359,149,155.09/21,935.85
  6. Step 6: Final answer
    x = 16,372.70

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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.