Home / 20,719.45-28,592.07-12,666.59

Finding the Fourth Proportional to 20,719.45, 28,592.07 and 12,666.59

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Solution

The fourth proportional to 20,719.45, 28,592.07 and 12,666.59 is: 17,479.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.45 : 28,592.07 = 12,666.59 : x
  2. Step 2: Convert to fraction form
    20,719.45/28,592.07 = 12,666.59/x
  3. Step 3: Cross multiply
    20,719.45x = 28,592.07 × 12,666.59
  4. Step 4: Simplify right side
    20,719.45x = 362,164,176.78
  5. Step 5: Solve for x
    x = 362,164,176.78/20,719.45
  6. Step 6: Final answer
    x = 17,479.43

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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.