Home / 13,557.08-20,309.13-9,339.59

Finding the Fourth Proportional to 13,557.08, 20,309.13 and 9,339.59

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Solution

The fourth proportional to 13,557.08, 20,309.13 and 9,339.59 is: 13,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.08 : 20,309.13 = 9,339.59 : x
  2. Step 2: Convert to fraction form
    13,557.08/20,309.13 = 9,339.59/x
  3. Step 3: Cross multiply
    13,557.08x = 20,309.13 × 9,339.59
  4. Step 4: Simplify right side
    13,557.08x = 189,678,845.91
  5. Step 5: Solve for x
    x = 189,678,845.91/13,557.08
  6. Step 6: Final answer
    x = 13,991.13

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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.