Home / 25,971.36-38,961.89-10,390.20

Finding the Fourth Proportional to 25,971.36, 38,961.89 and 10,390.20

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Solution

The fourth proportional to 25,971.36, 38,961.89 and 10,390.20 is: 15,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,971.36 : 38,961.89 = 10,390.20 : x
  2. Step 2: Convert to fraction form
    25,971.36/38,961.89 = 10,390.20/x
  3. Step 3: Cross multiply
    25,971.36x = 38,961.89 × 10,390.20
  4. Step 4: Simplify right side
    25,971.36x = 404,821,829.48
  5. Step 5: Solve for x
    x = 404,821,829.48/25,971.36
  6. Step 6: Final answer
    x = 15,587.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.