Home / 20,478.52-28,259.99-11,527.01

Finding the Fourth Proportional to 20,478.52, 28,259.99 and 11,527.01

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Solution

The fourth proportional to 20,478.52, 28,259.99 and 11,527.01 is: 15,907.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478.52 : 28,259.99 = 11,527.01 : x
  2. Step 2: Convert to fraction form
    20,478.52/28,259.99 = 11,527.01/x
  3. Step 3: Cross multiply
    20,478.52x = 28,259.99 × 11,527.01
  4. Step 4: Simplify right side
    20,478.52x = 325,753,137.60
  5. Step 5: Solve for x
    x = 325,753,137.60/20,478.52
  6. Step 6: Final answer
    x = 15,907.06

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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.