Home / 28,374.90-39,157.05-15,627.84

Finding the Fourth Proportional to 28,374.90, 39,157.05 and 15,627.84

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Solution

The fourth proportional to 28,374.90, 39,157.05 and 15,627.84 is: 21,566.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.90 : 39,157.05 = 15,627.84 : x
  2. Step 2: Convert to fraction form
    28,374.90/39,157.05 = 15,627.84/x
  3. Step 3: Cross multiply
    28,374.90x = 39,157.05 × 15,627.84
  4. Step 4: Simplify right side
    28,374.90x = 611,940,112.27
  5. Step 5: Solve for x
    x = 611,940,112.27/28,374.90
  6. Step 6: Final answer
    x = 21,566.25

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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.