Home / 15,744.52-21,720.60-9,453.28

Finding the Fourth Proportional to 15,744.52, 21,720.60 and 9,453.28

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Solution

The fourth proportional to 15,744.52, 21,720.60 and 9,453.28 is: 13,041.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.52 : 21,720.60 = 9,453.28 : x
  2. Step 2: Convert to fraction form
    15,744.52/21,720.60 = 9,453.28/x
  3. Step 3: Cross multiply
    15,744.52x = 21,720.60 × 9,453.28
  4. Step 4: Simplify right side
    15,744.52x = 205,330,913.57
  5. Step 5: Solve for x
    x = 205,330,913.57/15,744.52
  6. Step 6: Final answer
    x = 13,041.42

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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.