Home / 28,931.40-43,324.20-21,495.60

Finding the Fourth Proportional to 28,931.40, 43,324.20 and 21,495.60

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Solution

The fourth proportional to 28,931.40, 43,324.20 and 21,495.60 is: 32,189.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.40 : 43,324.20 = 21,495.60 : x
  2. Step 2: Convert to fraction form
    28,931.40/43,324.20 = 21,495.60/x
  3. Step 3: Cross multiply
    28,931.40x = 43,324.20 × 21,495.60
  4. Step 4: Simplify right side
    28,931.40x = 931,279,673.52
  5. Step 5: Solve for x
    x = 931,279,673.52/28,931.40
  6. Step 6: Final answer
    x = 32,189.24

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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.