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Finding the Fourth Proportional to 13,333.68, 18,394.74 and 9,357.39

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Solution

The fourth proportional to 13,333.68, 18,394.74 and 9,357.39 is: 12,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,333.68 : 18,394.74 = 9,357.39 : x
  2. Step 2: Convert to fraction form
    13,333.68/18,394.74 = 9,357.39/x
  3. Step 3: Cross multiply
    13,333.68x = 18,394.74 × 9,357.39
  4. Step 4: Simplify right side
    13,333.68x = 172,126,756.13
  5. Step 5: Solve for x
    x = 172,126,756.13/13,333.68
  6. Step 6: Final answer
    x = 12,909.17

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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.