Home / 15,524.48-21,431.04-9,938.72

Finding the Fourth Proportional to 15,524.48, 21,431.04 and 9,938.72

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Solution

The fourth proportional to 15,524.48, 21,431.04 and 9,938.72 is: 13,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,524.48 : 21,431.04 = 9,938.72 : x
  2. Step 2: Convert to fraction form
    15,524.48/21,431.04 = 9,938.72/x
  3. Step 3: Cross multiply
    15,524.48x = 21,431.04 × 9,938.72
  4. Step 4: Simplify right side
    15,524.48x = 212,997,105.87
  5. Step 5: Solve for x
    x = 212,997,105.87/15,524.48
  6. Step 6: Final answer
    x = 13,720.08

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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.