Home / 28,334.55-39,102.15-15,588.79

Finding the Fourth Proportional to 28,334.55, 39,102.15 and 15,588.79

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Solution

The fourth proportional to 28,334.55, 39,102.15 and 15,588.79 is: 21,512.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,334.55 : 39,102.15 = 15,588.79 : x
  2. Step 2: Convert to fraction form
    28,334.55/39,102.15 = 15,588.79/x
  3. Step 3: Cross multiply
    28,334.55x = 39,102.15 × 15,588.79
  4. Step 4: Simplify right side
    28,334.55x = 609,555,204.90
  5. Step 5: Solve for x
    x = 609,555,204.90/28,334.55
  6. Step 6: Final answer
    x = 21,512.79

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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.