Home / 20,433.52-28,196.74-11,479.31

Finding the Fourth Proportional to 20,433.52, 28,196.74 and 11,479.31

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Solution

The fourth proportional to 20,433.52, 28,196.74 and 11,479.31 is: 15,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.52 : 28,196.74 = 11,479.31 : x
  2. Step 2: Convert to fraction form
    20,433.52/28,196.74 = 11,479.31/x
  3. Step 3: Cross multiply
    20,433.52x = 28,196.74 × 11,479.31
  4. Step 4: Simplify right side
    20,433.52x = 323,679,119.45
  5. Step 5: Solve for x
    x = 323,679,119.45/20,433.52
  6. Step 6: Final answer
    x = 15,840.60

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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.