Home / 28,966.11-39,969.72-16,218.29

Finding the Fourth Proportional to 28,966.11, 39,969.72 and 16,218.29

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Solution

The fourth proportional to 28,966.11, 39,969.72 and 16,218.29 is: 22,379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.11 : 39,969.72 = 16,218.29 : x
  2. Step 2: Convert to fraction form
    28,966.11/39,969.72 = 16,218.29/x
  3. Step 3: Cross multiply
    28,966.11x = 39,969.72 × 16,218.29
  4. Step 4: Simplify right side
    28,966.11x = 648,240,510.18
  5. Step 5: Solve for x
    x = 648,240,510.18/28,966.11
  6. Step 6: Final answer
    x = 22,379.27

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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.