Home / 28,335.42-39,102.88-15,588.78

Finding the Fourth Proportional to 28,335.42, 39,102.88 and 15,588.78

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Solution

The fourth proportional to 28,335.42, 39,102.88 and 15,588.78 is: 21,512.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.42 : 39,102.88 = 15,588.78 : x
  2. Step 2: Convert to fraction form
    28,335.42/39,102.88 = 15,588.78/x
  3. Step 3: Cross multiply
    28,335.42x = 39,102.88 × 15,588.78
  4. Step 4: Simplify right side
    28,335.42x = 609,566,193.69
  5. Step 5: Solve for x
    x = 609,566,193.69/28,335.42
  6. Step 6: Final answer
    x = 21,512.52

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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.