Home / 21,430.76-32,150.48-7,589.48

Finding the Fourth Proportional to 21,430.76, 32,150.48 and 7,589.48

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Solution

The fourth proportional to 21,430.76, 32,150.48 and 7,589.48 is: 11,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.76 : 32,150.48 = 7,589.48 : x
  2. Step 2: Convert to fraction form
    21,430.76/32,150.48 = 7,589.48/x
  3. Step 3: Cross multiply
    21,430.76x = 32,150.48 × 7,589.48
  4. Step 4: Simplify right side
    21,430.76x = 244,005,424.95
  5. Step 5: Solve for x
    x = 244,005,424.95/21,430.76
  6. Step 6: Final answer
    x = 11,385.76

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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.