Home / 25,855.41-35,683.77-15,781.69

Finding the Fourth Proportional to 25,855.41, 35,683.77 and 15,781.69

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Solution

The fourth proportional to 25,855.41, 35,683.77 and 15,781.69 is: 21,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.41 : 35,683.77 = 15,781.69 : x
  2. Step 2: Convert to fraction form
    25,855.41/35,683.77 = 15,781.69/x
  3. Step 3: Cross multiply
    25,855.41x = 35,683.77 × 15,781.69
  4. Step 4: Simplify right side
    25,855.41x = 563,150,196.17
  5. Step 5: Solve for x
    x = 563,150,196.17/25,855.41
  6. Step 6: Final answer
    x = 21,780.75

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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.