Home / 20,365.12-30,552.54-7,218.64

Finding the Fourth Proportional to 20,365.12, 30,552.54 and 7,218.64

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Solution

The fourth proportional to 20,365.12, 30,552.54 and 7,218.64 is: 10,829.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.12 : 30,552.54 = 7,218.64 : x
  2. Step 2: Convert to fraction form
    20,365.12/30,552.54 = 7,218.64/x
  3. Step 3: Cross multiply
    20,365.12x = 30,552.54 × 7,218.64
  4. Step 4: Simplify right side
    20,365.12x = 220,547,787.35
  5. Step 5: Solve for x
    x = 220,547,787.35/20,365.12
  6. Step 6: Final answer
    x = 10,829.68

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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.