Home / 21,479.67-29,574.59-19,511.37

Finding the Fourth Proportional to 21,479.67, 29,574.59 and 19,511.37

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Solution

The fourth proportional to 21,479.67, 29,574.59 and 19,511.37 is: 26,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.67 : 29,574.59 = 19,511.37 : x
  2. Step 2: Convert to fraction form
    21,479.67/29,574.59 = 19,511.37/x
  3. Step 3: Cross multiply
    21,479.67x = 29,574.59 × 19,511.37
  4. Step 4: Simplify right side
    21,479.67x = 577,040,670.53
  5. Step 5: Solve for x
    x = 577,040,670.53/21,479.67
  6. Step 6: Final answer
    x = 26,864.50

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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.