Home / 28,140.96-38,825.04-18,585.60

Finding the Fourth Proportional to 28,140.96, 38,825.04 and 18,585.60

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Solution

The fourth proportional to 28,140.96, 38,825.04 and 18,585.60 is: 25,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.96 : 38,825.04 = 18,585.60 : x
  2. Step 2: Convert to fraction form
    28,140.96/38,825.04 = 18,585.60/x
  3. Step 3: Cross multiply
    28,140.96x = 38,825.04 × 18,585.60
  4. Step 4: Simplify right side
    28,140.96x = 721,586,663.42
  5. Step 5: Solve for x
    x = 721,586,663.42/28,140.96
  6. Step 6: Final answer
    x = 25,641.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.