Home / 28,820.25-39,771.95-15,572.25

Finding the Fourth Proportional to 28,820.25, 39,771.95 and 15,572.25

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Solution

The fourth proportional to 28,820.25, 39,771.95 and 15,572.25 is: 21,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.25 : 39,771.95 = 15,572.25 : x
  2. Step 2: Convert to fraction form
    28,820.25/39,771.95 = 15,572.25/x
  3. Step 3: Cross multiply
    28,820.25x = 39,771.95 × 15,572.25
  4. Step 4: Simplify right side
    28,820.25x = 619,338,670.53
  5. Step 5: Solve for x
    x = 619,338,670.53/28,820.25
  6. Step 6: Final answer
    x = 21,489.71

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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.