Home / 10,130.39-13,979.35-5,653.79

Finding the Fourth Proportional to 10,130.39, 13,979.35 and 5,653.79

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Solution

The fourth proportional to 10,130.39, 13,979.35 and 5,653.79 is: 7,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.39 : 13,979.35 = 5,653.79 : x
  2. Step 2: Convert to fraction form
    10,130.39/13,979.35 = 5,653.79/x
  3. Step 3: Cross multiply
    10,130.39x = 13,979.35 × 5,653.79
  4. Step 4: Simplify right side
    10,130.39x = 79,036,309.24
  5. Step 5: Solve for x
    x = 79,036,309.24/10,130.39
  6. Step 6: Final answer
    x = 7,801.90

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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.