Home / 13,440.47-20,165.64-4,677.89

Finding the Fourth Proportional to 13,440.47, 20,165.64 and 4,677.89

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Solution

The fourth proportional to 13,440.47, 20,165.64 and 4,677.89 is: 7,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.47 : 20,165.64 = 4,677.89 : x
  2. Step 2: Convert to fraction form
    13,440.47/20,165.64 = 4,677.89/x
  3. Step 3: Cross multiply
    13,440.47x = 20,165.64 × 4,677.89
  4. Step 4: Simplify right side
    13,440.47x = 94,332,696.11
  5. Step 5: Solve for x
    x = 94,332,696.11/13,440.47
  6. Step 6: Final answer
    x = 7,018.56

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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.