Home / 10,129.90-13,979.25-5,653.64

Finding the Fourth Proportional to 10,129.90, 13,979.25 and 5,653.64

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Solution

The fourth proportional to 10,129.90, 13,979.25 and 5,653.64 is: 7,802.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.90 : 13,979.25 = 5,653.64 : x
  2. Step 2: Convert to fraction form
    10,129.90/13,979.25 = 5,653.64/x
  3. Step 3: Cross multiply
    10,129.90x = 13,979.25 × 5,653.64
  4. Step 4: Simplify right side
    10,129.90x = 79,033,646.97
  5. Step 5: Solve for x
    x = 79,033,646.97/10,129.90
  6. Step 6: Final answer
    x = 7,802.02

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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.