Home / 21,985.62-30,339.93-11,914.08

Finding the Fourth Proportional to 21,985.62, 30,339.93 and 11,914.08

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Solution

The fourth proportional to 21,985.62, 30,339.93 and 11,914.08 is: 16,441.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.62 : 30,339.93 = 11,914.08 : x
  2. Step 2: Convert to fraction form
    21,985.62/30,339.93 = 11,914.08/x
  3. Step 3: Cross multiply
    21,985.62x = 30,339.93 × 11,914.08
  4. Step 4: Simplify right side
    21,985.62x = 361,472,353.21
  5. Step 5: Solve for x
    x = 361,472,353.21/21,985.62
  6. Step 6: Final answer
    x = 16,441.31

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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.