Home / 28,977.75-39,989.30-16,402.50

Finding the Fourth Proportional to 28,977.75, 39,989.30 and 16,402.50

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Solution

The fourth proportional to 28,977.75, 39,989.30 and 16,402.50 is: 22,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.75 : 39,989.30 = 16,402.50 : x
  2. Step 2: Convert to fraction form
    28,977.75/39,989.30 = 16,402.50/x
  3. Step 3: Cross multiply
    28,977.75x = 39,989.30 × 16,402.50
  4. Step 4: Simplify right side
    28,977.75x = 655,924,411.24
  5. Step 5: Solve for x
    x = 655,924,411.24/28,977.75
  6. Step 6: Final answer
    x = 22,635.45

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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.