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Finding the Fourth Proportional to 15,455.16, 21,476.03 and 15,294.60

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Solution

The fourth proportional to 15,455.16, 21,476.03 and 15,294.60 is: 21,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.16 : 21,476.03 = 15,294.60 : x
  2. Step 2: Convert to fraction form
    15,455.16/21,476.03 = 15,294.60/x
  3. Step 3: Cross multiply
    15,455.16x = 21,476.03 × 15,294.60
  4. Step 4: Simplify right side
    15,455.16x = 328,467,288.44
  5. Step 5: Solve for x
    x = 328,467,288.44/15,455.16
  6. Step 6: Final answer
    x = 21,252.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.