Home / 20,488.34-28,276.72-11,539.46

Finding the Fourth Proportional to 20,488.34, 28,276.72 and 11,539.46

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Solution

The fourth proportional to 20,488.34, 28,276.72 and 11,539.46 is: 15,926.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.34 : 28,276.72 = 11,539.46 : x
  2. Step 2: Convert to fraction form
    20,488.34/28,276.72 = 11,539.46/x
  3. Step 3: Cross multiply
    20,488.34x = 28,276.72 × 11,539.46
  4. Step 4: Simplify right side
    20,488.34x = 326,297,909.14
  5. Step 5: Solve for x
    x = 326,297,909.14/20,488.34
  6. Step 6: Final answer
    x = 15,926.03

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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.