Home / 28,600.68-39,445.54-20,130.84

Finding the Fourth Proportional to 28,600.68, 39,445.54 and 20,130.84

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Solution

The fourth proportional to 28,600.68, 39,445.54 and 20,130.84 is: 27,764.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.68 : 39,445.54 = 20,130.84 : x
  2. Step 2: Convert to fraction form
    28,600.68/39,445.54 = 20,130.84/x
  3. Step 3: Cross multiply
    28,600.68x = 39,445.54 × 20,130.84
  4. Step 4: Simplify right side
    28,600.68x = 794,071,991.32
  5. Step 5: Solve for x
    x = 794,071,991.32/28,600.68
  6. Step 6: Final answer
    x = 27,764.09

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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.