Home / 20,547.21-30,822.35-5,757.28

Finding the Fourth Proportional to 20,547.21, 30,822.35 and 5,757.28

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Solution

The fourth proportional to 20,547.21, 30,822.35 and 5,757.28 is: 8,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.21 : 30,822.35 = 5,757.28 : x
  2. Step 2: Convert to fraction form
    20,547.21/30,822.35 = 5,757.28/x
  3. Step 3: Cross multiply
    20,547.21x = 30,822.35 × 5,757.28
  4. Step 4: Simplify right side
    20,547.21x = 177,452,809.56
  5. Step 5: Solve for x
    x = 177,452,809.56/20,547.21
  6. Step 6: Final answer
    x = 8,636.35

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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.