Home / 12,586.84-17,378.85-8,818.36

Finding the Fourth Proportional to 12,586.84, 17,378.85 and 8,818.36

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Solution

The fourth proportional to 12,586.84, 17,378.85 and 8,818.36 is: 12,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.84 : 17,378.85 = 8,818.36 : x
  2. Step 2: Convert to fraction form
    12,586.84/17,378.85 = 8,818.36/x
  3. Step 3: Cross multiply
    12,586.84x = 17,378.85 × 8,818.36
  4. Step 4: Simplify right side
    12,586.84x = 153,252,955.69
  5. Step 5: Solve for x
    x = 153,252,955.69/12,586.84
  6. Step 6: Final answer
    x = 12,175.65

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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.