Home / 13,139.04-19,714.32-6,897.60

Finding the Fourth Proportional to 13,139.04, 19,714.32 and 6,897.60

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Solution

The fourth proportional to 13,139.04, 19,714.32 and 6,897.60 is: 10,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.04 : 19,714.32 = 6,897.60 : x
  2. Step 2: Convert to fraction form
    13,139.04/19,714.32 = 6,897.60/x
  3. Step 3: Cross multiply
    13,139.04x = 19,714.32 × 6,897.60
  4. Step 4: Simplify right side
    13,139.04x = 135,981,493.63
  5. Step 5: Solve for x
    x = 135,981,493.63/13,139.04
  6. Step 6: Final answer
    x = 10,349.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.