Home / 15,410.88-21,259.44-9,120.24

Finding the Fourth Proportional to 15,410.88, 21,259.44 and 9,120.24

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Solution

The fourth proportional to 15,410.88, 21,259.44 and 9,120.24 is: 12,581.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,410.88 : 21,259.44 = 9,120.24 : x
  2. Step 2: Convert to fraction form
    15,410.88/21,259.44 = 9,120.24/x
  3. Step 3: Cross multiply
    15,410.88x = 21,259.44 × 9,120.24
  4. Step 4: Simplify right side
    15,410.88x = 193,891,195.07
  5. Step 5: Solve for x
    x = 193,891,195.07/15,410.88
  6. Step 6: Final answer
    x = 12,581.45

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Double scale
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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.