Home / 28,688.90-42,984.80-17,572.38

Finding the Fourth Proportional to 28,688.90, 42,984.80 and 17,572.38

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Solution

The fourth proportional to 28,688.90, 42,984.80 and 17,572.38 is: 26,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.90 : 42,984.80 = 17,572.38 : x
  2. Step 2: Convert to fraction form
    28,688.90/42,984.80 = 17,572.38/x
  3. Step 3: Cross multiply
    28,688.90x = 42,984.80 × 17,572.38
  4. Step 4: Simplify right side
    28,688.90x = 755,345,239.82
  5. Step 5: Solve for x
    x = 755,345,239.82/28,688.90
  6. Step 6: Final answer
    x = 26,328.83

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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.