Home / 21,750.40-32,629.68-7,518.16

Finding the Fourth Proportional to 21,750.40, 32,629.68 and 7,518.16

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Solution

The fourth proportional to 21,750.40, 32,629.68 and 7,518.16 is: 11,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.40 : 32,629.68 = 7,518.16 : x
  2. Step 2: Convert to fraction form
    21,750.40/32,629.68 = 7,518.16/x
  3. Step 3: Cross multiply
    21,750.40x = 32,629.68 × 7,518.16
  4. Step 4: Simplify right side
    21,750.40x = 245,315,154.99
  5. Step 5: Solve for x
    x = 245,315,154.99/21,750.40
  6. Step 6: Final answer
    x = 11,278.65

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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.