Home / 21,462.18-29,619.45-13,511.22

Finding the Fourth Proportional to 21,462.18, 29,619.45 and 13,511.22

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Solution

The fourth proportional to 21,462.18, 29,619.45 and 13,511.22 is: 18,646.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,462.18 : 29,619.45 = 13,511.22 : x
  2. Step 2: Convert to fraction form
    21,462.18/29,619.45 = 13,511.22/x
  3. Step 3: Cross multiply
    21,462.18x = 29,619.45 × 13,511.22
  4. Step 4: Simplify right side
    21,462.18x = 400,194,905.23
  5. Step 5: Solve for x
    x = 400,194,905.23/21,462.18
  6. Step 6: Final answer
    x = 18,646.52

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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.