Home / 15,402.24-21,245.76-9,816.48

Finding the Fourth Proportional to 15,402.24, 21,245.76 and 9,816.48

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Solution

The fourth proportional to 15,402.24, 21,245.76 and 9,816.48 is: 13,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.24 : 21,245.76 = 9,816.48 : x
  2. Step 2: Convert to fraction form
    15,402.24/21,245.76 = 9,816.48/x
  3. Step 3: Cross multiply
    15,402.24x = 21,245.76 × 9,816.48
  4. Step 4: Simplify right side
    15,402.24x = 208,558,578.12
  5. Step 5: Solve for x
    x = 208,558,578.12/15,402.24
  6. Step 6: Final answer
    x = 13,540.80

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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.