Home / 28,166.40-42,234.08-19,291.91

Finding the Fourth Proportional to 28,166.40, 42,234.08 and 19,291.91

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Solution

The fourth proportional to 28,166.40, 42,234.08 and 19,291.91 is: 28,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.40 : 42,234.08 = 19,291.91 : x
  2. Step 2: Convert to fraction form
    28,166.40/42,234.08 = 19,291.91/x
  3. Step 3: Cross multiply
    28,166.40x = 42,234.08 × 19,291.91
  4. Step 4: Simplify right side
    28,166.40x = 814,775,762.66
  5. Step 5: Solve for x
    x = 814,775,762.66/28,166.40
  6. Step 6: Final answer
    x = 28,927.22

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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.