Home / 21,488.67-29,634.79-13,927.12

Finding the Fourth Proportional to 21,488.67, 29,634.79 and 13,927.12

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Solution

The fourth proportional to 21,488.67, 29,634.79 and 13,927.12 is: 19,206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.67 : 29,634.79 = 13,927.12 : x
  2. Step 2: Convert to fraction form
    21,488.67/29,634.79 = 13,927.12/x
  3. Step 3: Cross multiply
    21,488.67x = 29,634.79 × 13,927.12
  4. Step 4: Simplify right side
    21,488.67x = 412,727,276.50
  5. Step 5: Solve for x
    x = 412,727,276.50/21,488.67
  6. Step 6: Final answer
    x = 19,206.74

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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.