Home / 28,429.47-39,211.52-20,873.43

Finding the Fourth Proportional to 28,429.47, 39,211.52 and 20,873.43

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Solution

The fourth proportional to 28,429.47, 39,211.52 and 20,873.43 is: 28,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.47 : 39,211.52 = 20,873.43 : x
  2. Step 2: Convert to fraction form
    28,429.47/39,211.52 = 20,873.43/x
  3. Step 3: Cross multiply
    28,429.47x = 39,211.52 × 20,873.43
  4. Step 4: Simplify right side
    28,429.47x = 818,478,813.55
  5. Step 5: Solve for x
    x = 818,478,813.55/28,429.47
  6. Step 6: Final answer
    x = 28,789.80

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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.