Home / 13,781.75-20,675.87-4,547.75

Finding the Fourth Proportional to 13,781.75, 20,675.87 and 4,547.75

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Solution

The fourth proportional to 13,781.75, 20,675.87 and 4,547.75 is: 6,822.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.75 : 20,675.87 = 4,547.75 : x
  2. Step 2: Convert to fraction form
    13,781.75/20,675.87 = 4,547.75/x
  3. Step 3: Cross multiply
    13,781.75x = 20,675.87 × 4,547.75
  4. Step 4: Simplify right side
    13,781.75x = 94,028,665.05
  5. Step 5: Solve for x
    x = 94,028,665.05/13,781.75
  6. Step 6: Final answer
    x = 6,822.69

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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.