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Finding the Fourth Proportional to 13,465.71, 18,585.77 and 8,741.79

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Solution

The fourth proportional to 13,465.71, 18,585.77 and 8,741.79 is: 12,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.71 : 18,585.77 = 8,741.79 : x
  2. Step 2: Convert to fraction form
    13,465.71/18,585.77 = 8,741.79/x
  3. Step 3: Cross multiply
    13,465.71x = 18,585.77 × 8,741.79
  4. Step 4: Simplify right side
    13,465.71x = 162,472,854.62
  5. Step 5: Solve for x
    x = 162,472,854.62/13,465.71
  6. Step 6: Final answer
    x = 12,065.67

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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.