Home / 20,628.20-28,478.58-14,264.12

Finding the Fourth Proportional to 20,628.20, 28,478.58 and 14,264.12

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Solution

The fourth proportional to 20,628.20, 28,478.58 and 14,264.12 is: 19,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.20 : 28,478.58 = 14,264.12 : x
  2. Step 2: Convert to fraction form
    20,628.20/28,478.58 = 14,264.12/x
  3. Step 3: Cross multiply
    20,628.20x = 28,478.58 × 14,264.12
  4. Step 4: Simplify right side
    20,628.20x = 406,221,882.55
  5. Step 5: Solve for x
    x = 406,221,882.55/20,628.20
  6. Step 6: Final answer
    x = 19,692.55

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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.