Home / 13,561.76-20,342.65-6,540.47

Finding the Fourth Proportional to 13,561.76, 20,342.65 and 6,540.47

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Solution

The fourth proportional to 13,561.76, 20,342.65 and 6,540.47 is: 9,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.76 : 20,342.65 = 6,540.47 : x
  2. Step 2: Convert to fraction form
    13,561.76/20,342.65 = 6,540.47/x
  3. Step 3: Cross multiply
    13,561.76x = 20,342.65 × 6,540.47
  4. Step 4: Simplify right side
    13,561.76x = 133,050,357.63
  5. Step 5: Solve for x
    x = 133,050,357.63/13,561.76
  6. Step 6: Final answer
    x = 9,810.70

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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.