Home / 21,284.10-29,379.15-12,340.62

Finding the Fourth Proportional to 21,284.10, 29,379.15 and 12,340.62

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Solution

The fourth proportional to 21,284.10, 29,379.15 and 12,340.62 is: 17,034.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.10 : 29,379.15 = 12,340.62 : x
  2. Step 2: Convert to fraction form
    21,284.10/29,379.15 = 12,340.62/x
  3. Step 3: Cross multiply
    21,284.10x = 29,379.15 × 12,340.62
  4. Step 4: Simplify right side
    21,284.10x = 362,556,926.07
  5. Step 5: Solve for x
    x = 362,556,926.07/21,284.10
  6. Step 6: Final answer
    x = 17,034.17

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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.