Home / 21,511.74-29,655.54-15,836.34

Finding the Fourth Proportional to 21,511.74, 29,655.54 and 15,836.34

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Solution

The fourth proportional to 21,511.74, 29,655.54 and 15,836.34 is: 21,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.74 : 29,655.54 = 15,836.34 : x
  2. Step 2: Convert to fraction form
    21,511.74/29,655.54 = 15,836.34/x
  3. Step 3: Cross multiply
    21,511.74x = 29,655.54 × 15,836.34
  4. Step 4: Simplify right side
    21,511.74x = 469,635,214.32
  5. Step 5: Solve for x
    x = 469,635,214.32/21,511.74
  6. Step 6: Final answer
    x = 21,831.58

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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.