Home / 12,987.23-17,922.45-7,612.84

Finding the Fourth Proportional to 12,987.23, 17,922.45 and 7,612.84

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Solution

The fourth proportional to 12,987.23, 17,922.45 and 7,612.84 is: 10,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.23 : 17,922.45 = 7,612.84 : x
  2. Step 2: Convert to fraction form
    12,987.23/17,922.45 = 7,612.84/x
  3. Step 3: Cross multiply
    12,987.23x = 17,922.45 × 7,612.84
  4. Step 4: Simplify right side
    12,987.23x = 136,440,654.65
  5. Step 5: Solve for x
    x = 136,440,654.65/12,987.23
  6. Step 6: Final answer
    x = 10,505.75

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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.