Home / 20,349.08-28,080.12-11,394.50

Finding the Fourth Proportional to 20,349.08, 28,080.12 and 11,394.50

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Solution

The fourth proportional to 20,349.08, 28,080.12 and 11,394.50 is: 15,723.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.08 : 28,080.12 = 11,394.50 : x
  2. Step 2: Convert to fraction form
    20,349.08/28,080.12 = 11,394.50/x
  3. Step 3: Cross multiply
    20,349.08x = 28,080.12 × 11,394.50
  4. Step 4: Simplify right side
    20,349.08x = 319,958,927.34
  5. Step 5: Solve for x
    x = 319,958,927.34/20,349.08
  6. Step 6: Final answer
    x = 15,723.51

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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.