Home / 15,586.70-21,504.31-8,870.65

Finding the Fourth Proportional to 15,586.70, 21,504.31 and 8,870.65

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Solution

The fourth proportional to 15,586.70, 21,504.31 and 8,870.65 is: 12,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.70 : 21,504.31 = 8,870.65 : x
  2. Step 2: Convert to fraction form
    15,586.70/21,504.31 = 8,870.65/x
  3. Step 3: Cross multiply
    15,586.70x = 21,504.31 × 8,870.65
  4. Step 4: Simplify right side
    15,586.70x = 190,757,099.98
  5. Step 5: Solve for x
    x = 190,757,099.98/15,586.70
  6. Step 6: Final answer
    x = 12,238.45

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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.