Home / 28,977.64-39,990.18-16,402.60

Finding the Fourth Proportional to 28,977.64, 39,990.18 and 16,402.60

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Solution

The fourth proportional to 28,977.64, 39,990.18 and 16,402.60 is: 22,636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.64 : 39,990.18 = 16,402.60 : x
  2. Step 2: Convert to fraction form
    28,977.64/39,990.18 = 16,402.60/x
  3. Step 3: Cross multiply
    28,977.64x = 39,990.18 × 16,402.60
  4. Step 4: Simplify right side
    28,977.64x = 655,942,926.47
  5. Step 5: Solve for x
    x = 655,942,926.47/28,977.64
  6. Step 6: Final answer
    x = 22,636.17

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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.