Home / 13,542.08-20,319.16-8,610.40

Finding the Fourth Proportional to 13,542.08, 20,319.16 and 8,610.40

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Solution

The fourth proportional to 13,542.08, 20,319.16 and 8,610.40 is: 12,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.08 : 20,319.16 = 8,610.40 : x
  2. Step 2: Convert to fraction form
    13,542.08/20,319.16 = 8,610.40/x
  3. Step 3: Cross multiply
    13,542.08x = 20,319.16 × 8,610.40
  4. Step 4: Simplify right side
    13,542.08x = 174,956,095.26
  5. Step 5: Solve for x
    x = 174,956,095.26/13,542.08
  6. Step 6: Final answer
    x = 12,919.44

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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.