Home / 28,182.88-38,893.20-15,607.84

Finding the Fourth Proportional to 28,182.88, 38,893.20 and 15,607.84

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Solution

The fourth proportional to 28,182.88, 38,893.20 and 15,607.84 is: 21,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.88 : 38,893.20 = 15,607.84 : x
  2. Step 2: Convert to fraction form
    28,182.88/38,893.20 = 15,607.84/x
  3. Step 3: Cross multiply
    28,182.88x = 38,893.20 × 15,607.84
  4. Step 4: Simplify right side
    28,182.88x = 607,038,842.69
  5. Step 5: Solve for x
    x = 607,038,842.69/28,182.88
  6. Step 6: Final answer
    x = 21,539.28

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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.