Home / 21,427.19-29,542.04-16,639.01

Finding the Fourth Proportional to 21,427.19, 29,542.04 and 16,639.01

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Solution

The fourth proportional to 21,427.19, 29,542.04 and 16,639.01 is: 22,940.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.19 : 29,542.04 = 16,639.01 : x
  2. Step 2: Convert to fraction form
    21,427.19/29,542.04 = 16,639.01/x
  3. Step 3: Cross multiply
    21,427.19x = 29,542.04 × 16,639.01
  4. Step 4: Simplify right side
    21,427.19x = 491,550,130.47
  5. Step 5: Solve for x
    x = 491,550,130.47/21,427.19
  6. Step 6: Final answer
    x = 22,940.49

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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.