Home / 20,006.40-27,599.04-12,938.88

Finding the Fourth Proportional to 20,006.40, 27,599.04 and 12,938.88

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Solution

The fourth proportional to 20,006.40, 27,599.04 and 12,938.88 is: 17,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,006.40 : 27,599.04 = 12,938.88 : x
  2. Step 2: Convert to fraction form
    20,006.40/27,599.04 = 12,938.88/x
  3. Step 3: Cross multiply
    20,006.40x = 27,599.04 × 12,938.88
  4. Step 4: Simplify right side
    20,006.40x = 357,100,666.68
  5. Step 5: Solve for x
    x = 357,100,666.68/20,006.40
  6. Step 6: Final answer
    x = 17,849.32

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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.