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Finding the Fourth Proportional to 13,662.15, 18,854.27 and 7,612.93

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Solution

The fourth proportional to 13,662.15, 18,854.27 and 7,612.93 is: 10,506.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.15 : 18,854.27 = 7,612.93 : x
  2. Step 2: Convert to fraction form
    13,662.15/18,854.27 = 7,612.93/x
  3. Step 3: Cross multiply
    13,662.15x = 18,854.27 × 7,612.93
  4. Step 4: Simplify right side
    13,662.15x = 143,536,237.71
  5. Step 5: Solve for x
    x = 143,536,237.71/13,662.15
  6. Step 6: Final answer
    x = 10,506.12

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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.