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Finding the Fourth Proportional to 13,308.68, 18,366.68 and 9,328.34

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Solution

The fourth proportional to 13,308.68, 18,366.68 and 9,328.34 is: 12,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.68 : 18,366.68 = 9,328.34 : x
  2. Step 2: Convert to fraction form
    13,308.68/18,366.68 = 9,328.34/x
  3. Step 3: Cross multiply
    13,308.68x = 18,366.68 × 9,328.34
  4. Step 4: Simplify right side
    13,308.68x = 171,330,635.71
  5. Step 5: Solve for x
    x = 171,330,635.71/13,308.68
  6. Step 6: Final answer
    x = 12,873.60

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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.