Home / 13,139.13-19,714.16-7,884.26

Finding the Fourth Proportional to 13,139.13, 19,714.16 and 7,884.26

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Solution

The fourth proportional to 13,139.13, 19,714.16 and 7,884.26 is: 11,829.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.13 : 19,714.16 = 7,884.26 : x
  2. Step 2: Convert to fraction form
    13,139.13/19,714.16 = 7,884.26/x
  3. Step 3: Cross multiply
    13,139.13x = 19,714.16 × 7,884.26
  4. Step 4: Simplify right side
    13,139.13x = 155,431,484.26
  5. Step 5: Solve for x
    x = 155,431,484.26/13,139.13
  6. Step 6: Final answer
    x = 11,829.66

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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.