Home / 10,129.98-13,979.34-5,653.68

Finding the Fourth Proportional to 10,129.98, 13,979.34 and 5,653.68

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Solution

The fourth proportional to 10,129.98, 13,979.34 and 5,653.68 is: 7,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.98 : 13,979.34 = 5,653.68 : x
  2. Step 2: Convert to fraction form
    10,129.98/13,979.34 = 5,653.68/x
  3. Step 3: Cross multiply
    10,129.98x = 13,979.34 × 5,653.68
  4. Step 4: Simplify right side
    10,129.98x = 79,034,714.97
  5. Step 5: Solve for x
    x = 79,034,714.97/10,129.98
  6. Step 6: Final answer
    x = 7,802.06

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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.