Home / 21,790.80-32,688.23-7,749.45

Finding the Fourth Proportional to 21,790.80, 32,688.23 and 7,749.45

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Solution

The fourth proportional to 21,790.80, 32,688.23 and 7,749.45 is: 11,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.80 : 32,688.23 = 7,749.45 : x
  2. Step 2: Convert to fraction form
    21,790.80/32,688.23 = 7,749.45/x
  3. Step 3: Cross multiply
    21,790.80x = 32,688.23 × 7,749.45
  4. Step 4: Simplify right side
    21,790.80x = 253,315,765.23
  5. Step 5: Solve for x
    x = 253,315,765.23/21,790.80
  6. Step 6: Final answer
    x = 11,624.90

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1.5x scale

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.