Home / 21,342.92-29,453.40-11,911.52

Finding the Fourth Proportional to 21,342.92, 29,453.40 and 11,911.52

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Solution

The fourth proportional to 21,342.92, 29,453.40 and 11,911.52 is: 16,437.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.92 : 29,453.40 = 11,911.52 : x
  2. Step 2: Convert to fraction form
    21,342.92/29,453.40 = 11,911.52/x
  3. Step 3: Cross multiply
    21,342.92x = 29,453.40 × 11,911.52
  4. Step 4: Simplify right side
    21,342.92x = 350,834,763.17
  5. Step 5: Solve for x
    x = 350,834,763.17/21,342.92
  6. Step 6: Final answer
    x = 16,437.99

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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.