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Finding the Fourth Proportional to 13,162.60, 18,158.60 and 7,854.34

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Solution

The fourth proportional to 13,162.60, 18,158.60 and 7,854.34 is: 10,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.60 : 18,158.60 = 7,854.34 : x
  2. Step 2: Convert to fraction form
    13,162.60/18,158.60 = 7,854.34/x
  3. Step 3: Cross multiply
    13,162.60x = 18,158.60 × 7,854.34
  4. Step 4: Simplify right side
    13,162.60x = 142,623,727.53
  5. Step 5: Solve for x
    x = 142,623,727.53/13,162.60
  6. Step 6: Final answer
    x = 10,835.53

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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.