Home / 28,989.99-43,446.96-21,011.54

Finding the Fourth Proportional to 28,989.99, 43,446.96 and 21,011.54

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Solution

The fourth proportional to 28,989.99, 43,446.96 and 21,011.54 is: 31,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.99 : 43,446.96 = 21,011.54 : x
  2. Step 2: Convert to fraction form
    28,989.99/43,446.96 = 21,011.54/x
  3. Step 3: Cross multiply
    28,989.99x = 43,446.96 × 21,011.54
  4. Step 4: Simplify right side
    28,989.99x = 912,887,320.68
  5. Step 5: Solve for x
    x = 912,887,320.68/28,989.99
  6. Step 6: Final answer
    x = 31,489.74

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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.