Home / 13,397.54-20,090.10-7,155.86

Finding the Fourth Proportional to 13,397.54, 20,090.10 and 7,155.86

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Solution

The fourth proportional to 13,397.54, 20,090.10 and 7,155.86 is: 10,730.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.54 : 20,090.10 = 7,155.86 : x
  2. Step 2: Convert to fraction form
    13,397.54/20,090.10 = 7,155.86/x
  3. Step 3: Cross multiply
    13,397.54x = 20,090.10 × 7,155.86
  4. Step 4: Simplify right side
    13,397.54x = 143,761,942.99
  5. Step 5: Solve for x
    x = 143,761,942.99/13,397.54
  6. Step 6: Final answer
    x = 10,730.47

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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.