Home / 15,447.78-21,333.04-13,196.52

Finding the Fourth Proportional to 15,447.78, 21,333.04 and 13,196.52

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Solution

The fourth proportional to 15,447.78, 21,333.04 and 13,196.52 is: 18,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.78 : 21,333.04 = 13,196.52 : x
  2. Step 2: Convert to fraction form
    15,447.78/21,333.04 = 13,196.52/x
  3. Step 3: Cross multiply
    15,447.78x = 21,333.04 × 13,196.52
  4. Step 4: Simplify right side
    15,447.78x = 281,521,889.02
  5. Step 5: Solve for x
    x = 281,521,889.02/15,447.78
  6. Step 6: Final answer
    x = 18,224.10

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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.