Home / 25,855.74-35,684.25-15,782.07

Finding the Fourth Proportional to 25,855.74, 35,684.25 and 15,782.07

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Solution

The fourth proportional to 25,855.74, 35,684.25 and 15,782.07 is: 21,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.74 : 35,684.25 = 15,782.07 : x
  2. Step 2: Convert to fraction form
    25,855.74/35,684.25 = 15,782.07/x
  3. Step 3: Cross multiply
    25,855.74x = 35,684.25 × 15,782.07
  4. Step 4: Simplify right side
    25,855.74x = 563,171,331.40
  5. Step 5: Solve for x
    x = 563,171,331.40/25,855.74
  6. Step 6: Final answer
    x = 21,781.29

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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.