Home / 21,980.26-30,332.85-11,908.72

Finding the Fourth Proportional to 21,980.26, 30,332.85 and 11,908.72

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Solution

The fourth proportional to 21,980.26, 30,332.85 and 11,908.72 is: 16,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.26 : 30,332.85 = 11,908.72 : x
  2. Step 2: Convert to fraction form
    21,980.26/30,332.85 = 11,908.72/x
  3. Step 3: Cross multiply
    21,980.26x = 30,332.85 × 11,908.72
  4. Step 4: Simplify right side
    21,980.26x = 361,225,417.45
  5. Step 5: Solve for x
    x = 361,225,417.45/21,980.26
  6. Step 6: Final answer
    x = 16,434.08

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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.