Home / 15,428.21-23,139.38-7,522.79

Finding the Fourth Proportional to 15,428.21, 23,139.38 and 7,522.79

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Solution

The fourth proportional to 15,428.21, 23,139.38 and 7,522.79 is: 11,282.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.21 : 23,139.38 = 7,522.79 : x
  2. Step 2: Convert to fraction form
    15,428.21/23,139.38 = 7,522.79/x
  3. Step 3: Cross multiply
    15,428.21x = 23,139.38 × 7,522.79
  4. Step 4: Simplify right side
    15,428.21x = 174,072,696.47
  5. Step 5: Solve for x
    x = 174,072,696.47/15,428.21
  6. Step 6: Final answer
    x = 11,282.75

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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.