Home / 28,938.60-43,407.90-21,162.60

Finding the Fourth Proportional to 28,938.60, 43,407.90 and 21,162.60

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Solution

The fourth proportional to 28,938.60, 43,407.90 and 21,162.60 is: 31,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.60 : 43,407.90 = 21,162.60 : x
  2. Step 2: Convert to fraction form
    28,938.60/43,407.90 = 21,162.60/x
  3. Step 3: Cross multiply
    28,938.60x = 43,407.90 × 21,162.60
  4. Step 4: Simplify right side
    28,938.60x = 918,624,024.54
  5. Step 5: Solve for x
    x = 918,624,024.54/28,938.60
  6. Step 6: Final answer
    x = 31,743.90

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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.