Home / 20,719.68-28,592.31-12,666.82

Finding the Fourth Proportional to 20,719.68, 28,592.31 and 12,666.82

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Solution

The fourth proportional to 20,719.68, 28,592.31 and 12,666.82 is: 17,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.68 : 28,592.31 = 12,666.82 : x
  2. Step 2: Convert to fraction form
    20,719.68/28,592.31 = 12,666.82/x
  3. Step 3: Cross multiply
    20,719.68x = 28,592.31 × 12,666.82
  4. Step 4: Simplify right side
    20,719.68x = 362,173,644.15
  5. Step 5: Solve for x
    x = 362,173,644.15/20,719.68
  6. Step 6: Final answer
    x = 17,479.69

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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.