Home / 21,955.62-30,298.80-11,884.08

Finding the Fourth Proportional to 21,955.62, 30,298.80 and 11,884.08

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Solution

The fourth proportional to 21,955.62, 30,298.80 and 11,884.08 is: 16,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.62 : 30,298.80 = 11,884.08 : x
  2. Step 2: Convert to fraction form
    21,955.62/30,298.80 = 11,884.08/x
  3. Step 3: Cross multiply
    21,955.62x = 30,298.80 × 11,884.08
  4. Step 4: Simplify right side
    21,955.62x = 360,073,363.10
  5. Step 5: Solve for x
    x = 360,073,363.10/21,955.62
  6. Step 6: Final answer
    x = 16,400.05

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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.