Home / 13,345.58-20,011.76-7,800.32

Finding the Fourth Proportional to 13,345.58, 20,011.76 and 7,800.32

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Solution

The fourth proportional to 13,345.58, 20,011.76 and 7,800.32 is: 11,696.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.58 : 20,011.76 = 7,800.32 : x
  2. Step 2: Convert to fraction form
    13,345.58/20,011.76 = 7,800.32/x
  3. Step 3: Cross multiply
    13,345.58x = 20,011.76 × 7,800.32
  4. Step 4: Simplify right side
    13,345.58x = 156,098,131.76
  5. Step 5: Solve for x
    x = 156,098,131.76/13,345.58
  6. Step 6: Final answer
    x = 11,696.62

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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.