Home / 21,980.00-30,332.40-11,908.50

Finding the Fourth Proportional to 21,980.00, 30,332.40 and 11,908.50

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Solution

The fourth proportional to 21,980.00, 30,332.40 and 11,908.50 is: 16,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.00 : 30,332.40 = 11,908.50 : x
  2. Step 2: Convert to fraction form
    21,980.00/30,332.40 = 11,908.50/x
  3. Step 3: Cross multiply
    21,980.00x = 30,332.40 × 11,908.50
  4. Step 4: Simplify right side
    21,980.00x = 361,213,385.40
  5. Step 5: Solve for x
    x = 361,213,385.40/21,980.00
  6. Step 6: Final answer
    x = 16,433.73

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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.