Home / 15,529.36-21,430.56-9,241.60

Finding the Fourth Proportional to 15,529.36, 21,430.56 and 9,241.60

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Solution

The fourth proportional to 15,529.36, 21,430.56 and 9,241.60 is: 12,753.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.36 : 21,430.56 = 9,241.60 : x
  2. Step 2: Convert to fraction form
    15,529.36/21,430.56 = 9,241.60/x
  3. Step 3: Cross multiply
    15,529.36x = 21,430.56 × 9,241.60
  4. Step 4: Simplify right side
    15,529.36x = 198,052,663.30
  5. Step 5: Solve for x
    x = 198,052,663.30/15,529.36
  6. Step 6: Final answer
    x = 12,753.43

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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.