Home / 20,345.96-30,521.78-9,255.44

Finding the Fourth Proportional to 20,345.96, 30,521.78 and 9,255.44

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Solution

The fourth proportional to 20,345.96, 30,521.78 and 9,255.44 is: 13,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.96 : 30,521.78 = 9,255.44 : x
  2. Step 2: Convert to fraction form
    20,345.96/30,521.78 = 9,255.44/x
  3. Step 3: Cross multiply
    20,345.96x = 30,521.78 × 9,255.44
  4. Step 4: Simplify right side
    20,345.96x = 282,492,503.48
  5. Step 5: Solve for x
    x = 282,492,503.48/20,345.96
  6. Step 6: Final answer
    x = 13,884.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.