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Finding the Fourth Proportional to 10,586.70, 15,860.85 and 8,628.30

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Solution

The fourth proportional to 10,586.70, 15,860.85 and 8,628.30 is: 12,926.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,586.70 : 15,860.85 = 8,628.30 : x
  2. Step 2: Convert to fraction form
    10,586.70/15,860.85 = 8,628.30/x
  3. Step 3: Cross multiply
    10,586.70x = 15,860.85 × 8,628.30
  4. Step 4: Simplify right side
    10,586.70x = 136,852,172.06
  5. Step 5: Solve for x
    x = 136,852,172.06/10,586.70
  6. Step 6: Final answer
    x = 12,926.80

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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.