Home / 21,624.24-32,439.60-7,770

Finding the Fourth Proportional to 21,624.24, 32,439.60 and 7,770

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Solution

The fourth proportional to 21,624.24, 32,439.60 and 7,770 is: 11,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.24 : 32,439.60 = 7,770 : x
  2. Step 2: Convert to fraction form
    21,624.24/32,439.60 = 7,770/x
  3. Step 3: Cross multiply
    21,624.24x = 32,439.60 × 7,770
  4. Step 4: Simplify right side
    21,624.24x = 252,055,692
  5. Step 5: Solve for x
    x = 252,055,692/21,624.24
  6. Step 6: Final answer
    x = 11,656.16

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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.