Home / 15,230.16-21,015.54-8,515.44

Finding the Fourth Proportional to 15,230.16, 21,015.54 and 8,515.44

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Solution

The fourth proportional to 15,230.16, 21,015.54 and 8,515.44 is: 11,750.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,230.16 : 21,015.54 = 8,515.44 : x
  2. Step 2: Convert to fraction form
    15,230.16/21,015.54 = 8,515.44/x
  3. Step 3: Cross multiply
    15,230.16x = 21,015.54 × 8,515.44
  4. Step 4: Simplify right side
    15,230.16x = 178,956,569.94
  5. Step 5: Solve for x
    x = 178,956,569.94/15,230.16
  6. Step 6: Final answer
    x = 11,750.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.