Home / 18,985.69-28,400.77-15,875.29

Finding the Fourth Proportional to 18,985.69, 28,400.77 and 15,875.29

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Solution

The fourth proportional to 18,985.69, 28,400.77 and 15,875.29 is: 23,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.69 : 28,400.77 = 15,875.29 : x
  2. Step 2: Convert to fraction form
    18,985.69/28,400.77 = 15,875.29/x
  3. Step 3: Cross multiply
    18,985.69x = 28,400.77 × 15,875.29
  4. Step 4: Simplify right side
    18,985.69x = 450,870,459.97
  5. Step 5: Solve for x
    x = 450,870,459.97/18,985.69
  6. Step 6: Final answer
    x = 23,747.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.