Home / 20,367.83-28,108.56-12,715.64

Finding the Fourth Proportional to 20,367.83, 28,108.56 and 12,715.64

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Solution

The fourth proportional to 20,367.83, 28,108.56 and 12,715.64 is: 17,548.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.83 : 28,108.56 = 12,715.64 : x
  2. Step 2: Convert to fraction form
    20,367.83/28,108.56 = 12,715.64/x
  3. Step 3: Cross multiply
    20,367.83x = 28,108.56 × 12,715.64
  4. Step 4: Simplify right side
    20,367.83x = 357,418,125.76
  5. Step 5: Solve for x
    x = 357,418,125.76/20,367.83
  6. Step 6: Final answer
    x = 17,548.17

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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.