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Finding the Fourth Proportional to 8,981.64, 13,452.40 and 6,886.21

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Solution

The fourth proportional to 8,981.64, 13,452.40 and 6,886.21 is: 10,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.64 : 13,452.40 = 6,886.21 : x
  2. Step 2: Convert to fraction form
    8,981.64/13,452.40 = 6,886.21/x
  3. Step 3: Cross multiply
    8,981.64x = 13,452.40 × 6,886.21
  4. Step 4: Simplify right side
    8,981.64x = 92,636,051.40
  5. Step 5: Solve for x
    x = 92,636,051.40/8,981.64
  6. Step 6: Final answer
    x = 10,313.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.