Home / 25,979.13-35,851.01-20,319.66

Finding the Fourth Proportional to 25,979.13, 35,851.01 and 20,319.66

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Solution

The fourth proportional to 25,979.13, 35,851.01 and 20,319.66 is: 28,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,979.13 : 35,851.01 = 20,319.66 : x
  2. Step 2: Convert to fraction form
    25,979.13/35,851.01 = 20,319.66/x
  3. Step 3: Cross multiply
    25,979.13x = 35,851.01 × 20,319.66
  4. Step 4: Simplify right side
    25,979.13x = 728,480,232.26
  5. Step 5: Solve for x
    x = 728,480,232.26/25,979.13
  6. Step 6: Final answer
    x = 28,040.98

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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.