Home / 20,500.37-28,282.29-12,528.75

Finding the Fourth Proportional to 20,500.37, 28,282.29 and 12,528.75

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Solution

The fourth proportional to 20,500.37, 28,282.29 and 12,528.75 is: 17,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.37 : 28,282.29 = 12,528.75 : x
  2. Step 2: Convert to fraction form
    20,500.37/28,282.29 = 12,528.75/x
  3. Step 3: Cross multiply
    20,500.37x = 28,282.29 × 12,528.75
  4. Step 4: Simplify right side
    20,500.37x = 354,341,740.84
  5. Step 5: Solve for x
    x = 354,341,740.84/20,500.37
  6. Step 6: Final answer
    x = 17,284.65

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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.