Home / 25,500.77-38,079.42-20,830.01

Finding the Fourth Proportional to 25,500.77, 38,079.42 and 20,830.01

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Solution

The fourth proportional to 25,500.77, 38,079.42 and 20,830.01 is: 31,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,500.77 : 38,079.42 = 20,830.01 : x
  2. Step 2: Convert to fraction form
    25,500.77/38,079.42 = 20,830.01/x
  3. Step 3: Cross multiply
    25,500.77x = 38,079.42 × 20,830.01
  4. Step 4: Simplify right side
    25,500.77x = 793,194,645.08
  5. Step 5: Solve for x
    x = 793,194,645.08/25,500.77
  6. Step 6: Final answer
    x = 31,104.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.