Home / 21,820.42-32,730.40-9,329.82

Finding the Fourth Proportional to 21,820.42, 32,730.40 and 9,329.82

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Solution

The fourth proportional to 21,820.42, 32,730.40 and 9,329.82 is: 13,994.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.42 : 32,730.40 = 9,329.82 : x
  2. Step 2: Convert to fraction form
    21,820.42/32,730.40 = 9,329.82/x
  3. Step 3: Cross multiply
    21,820.42x = 32,730.40 × 9,329.82
  4. Step 4: Simplify right side
    21,820.42x = 305,368,740.53
  5. Step 5: Solve for x
    x = 305,368,740.53/21,820.42
  6. Step 6: Final answer
    x = 13,994.63

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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.