Home / 28,582.69-39,443.13-15,661.90

Finding the Fourth Proportional to 28,582.69, 39,443.13 and 15,661.90

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Solution

The fourth proportional to 28,582.69, 39,443.13 and 15,661.90 is: 21,612.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.69 : 39,443.13 = 15,661.90 : x
  2. Step 2: Convert to fraction form
    28,582.69/39,443.13 = 15,661.90/x
  3. Step 3: Cross multiply
    28,582.69x = 39,443.13 × 15,661.90
  4. Step 4: Simplify right side
    28,582.69x = 617,754,252.07
  5. Step 5: Solve for x
    x = 617,754,252.07/28,582.69
  6. Step 6: Final answer
    x = 21,612.88

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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.