Home / 25,811.79-35,615.93-15,203.51

Finding the Fourth Proportional to 25,811.79, 35,615.93 and 15,203.51

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Solution

The fourth proportional to 25,811.79, 35,615.93 and 15,203.51 is: 20,978.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.79 : 35,615.93 = 15,203.51 : x
  2. Step 2: Convert to fraction form
    25,811.79/35,615.93 = 15,203.51/x
  3. Step 3: Cross multiply
    25,811.79x = 35,615.93 × 15,203.51
  4. Step 4: Simplify right side
    25,811.79x = 541,487,147.91
  5. Step 5: Solve for x
    x = 541,487,147.91/25,811.79
  6. Step 6: Final answer
    x = 20,978.29

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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.