Home / 13,398.78-20,090.88-5,605.77

Finding the Fourth Proportional to 13,398.78, 20,090.88 and 5,605.77

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Solution

The fourth proportional to 13,398.78, 20,090.88 and 5,605.77 is: 8,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.78 : 20,090.88 = 5,605.77 : x
  2. Step 2: Convert to fraction form
    13,398.78/20,090.88 = 5,605.77/x
  3. Step 3: Cross multiply
    13,398.78x = 20,090.88 × 5,605.77
  4. Step 4: Simplify right side
    13,398.78x = 112,624,852.38
  5. Step 5: Solve for x
    x = 112,624,852.38/13,398.78
  6. Step 6: Final answer
    x = 8,405.61

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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.