Home / 15,396.65-21,247.31-8,323.05

Finding the Fourth Proportional to 15,396.65, 21,247.31 and 8,323.05

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Solution

The fourth proportional to 15,396.65, 21,247.31 and 8,323.05 is: 11,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.65 : 21,247.31 = 8,323.05 : x
  2. Step 2: Convert to fraction form
    15,396.65/21,247.31 = 8,323.05/x
  3. Step 3: Cross multiply
    15,396.65x = 21,247.31 × 8,323.05
  4. Step 4: Simplify right side
    15,396.65x = 176,842,381.88
  5. Step 5: Solve for x
    x = 176,842,381.88/15,396.65
  6. Step 6: Final answer
    x = 11,485.77

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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.