Home / 13,656.22-20,501.62-8,378.26

Finding the Fourth Proportional to 13,656.22, 20,501.62 and 8,378.26

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Solution

The fourth proportional to 13,656.22, 20,501.62 and 8,378.26 is: 12,578.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.22 : 20,501.62 = 8,378.26 : x
  2. Step 2: Convert to fraction form
    13,656.22/20,501.62 = 8,378.26/x
  3. Step 3: Cross multiply
    13,656.22x = 20,501.62 × 8,378.26
  4. Step 4: Simplify right side
    13,656.22x = 171,767,902.78
  5. Step 5: Solve for x
    x = 171,767,902.78/13,656.22
  6. Step 6: Final answer
    x = 12,578.00

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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.