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Finding the Fourth Proportional to 13,394, 18,483.21 and 7,425.77

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Solution

The fourth proportional to 13,394, 18,483.21 and 7,425.77 is: 10,247.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394 : 18,483.21 = 7,425.77 : x
  2. Step 2: Convert to fraction form
    13,394/18,483.21 = 7,425.77/x
  3. Step 3: Cross multiply
    13,394x = 18,483.21 × 7,425.77
  4. Step 4: Simplify right side
    13,394x = 137,252,066.32
  5. Step 5: Solve for x
    x = 137,252,066.32/13,394
  6. Step 6: Final answer
    x = 10,247.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.