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Finding the Fourth Proportional to 13,357.74, 18,426.92 and 12,407.92

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Solution

The fourth proportional to 13,357.74, 18,426.92 and 12,407.92 is: 17,116.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.74 : 18,426.92 = 12,407.92 : x
  2. Step 2: Convert to fraction form
    13,357.74/18,426.92 = 12,407.92/x
  3. Step 3: Cross multiply
    13,357.74x = 18,426.92 × 12,407.92
  4. Step 4: Simplify right side
    13,357.74x = 228,639,749.21
  5. Step 5: Solve for x
    x = 228,639,749.21/13,357.74
  6. Step 6: Final answer
    x = 17,116.65

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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.