Home / 13,563.76-20,345.65-6,542.47

Finding the Fourth Proportional to 13,563.76, 20,345.65 and 6,542.47

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Solution

The fourth proportional to 13,563.76, 20,345.65 and 6,542.47 is: 9,813.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.76 : 20,345.65 = 6,542.47 : x
  2. Step 2: Convert to fraction form
    13,563.76/20,345.65 = 6,542.47/x
  3. Step 3: Cross multiply
    13,563.76x = 20,345.65 × 6,542.47
  4. Step 4: Simplify right side
    13,563.76x = 133,110,804.76
  5. Step 5: Solve for x
    x = 133,110,804.76/13,563.76
  6. Step 6: Final answer
    x = 9,813.71

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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.