Home / 19,720.11-29,429.23-17,616.49

Finding the Fourth Proportional to 19,720.11, 29,429.23 and 17,616.49

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Solution

The fourth proportional to 19,720.11, 29,429.23 and 17,616.49 is: 26,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.11 : 29,429.23 = 17,616.49 : x
  2. Step 2: Convert to fraction form
    19,720.11/29,429.23 = 17,616.49/x
  3. Step 3: Cross multiply
    19,720.11x = 29,429.23 × 17,616.49
  4. Step 4: Simplify right side
    19,720.11x = 518,439,736.00
  5. Step 5: Solve for x
    x = 518,439,736.00/19,720.11
  6. Step 6: Final answer
    x = 26,289.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.