Home / 21,219.04-29,285.04-12,836.32

Finding the Fourth Proportional to 21,219.04, 29,285.04 and 12,836.32

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Solution

The fourth proportional to 21,219.04, 29,285.04 and 12,836.32 is: 17,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.04 : 29,285.04 = 12,836.32 : x
  2. Step 2: Convert to fraction form
    21,219.04/29,285.04 = 12,836.32/x
  3. Step 3: Cross multiply
    21,219.04x = 29,285.04 × 12,836.32
  4. Step 4: Simplify right side
    21,219.04x = 375,912,144.65
  5. Step 5: Solve for x
    x = 375,912,144.65/21,219.04
  6. Step 6: Final answer
    x = 17,715.79

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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.