Home / 10,129.47-13,979.16-5,653.41

Finding the Fourth Proportional to 10,129.47, 13,979.16 and 5,653.41

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Solution

The fourth proportional to 10,129.47, 13,979.16 and 5,653.41 is: 7,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.47 : 13,979.16 = 5,653.41 : x
  2. Step 2: Convert to fraction form
    10,129.47/13,979.16 = 5,653.41/x
  3. Step 3: Cross multiply
    10,129.47x = 13,979.16 × 5,653.41
  4. Step 4: Simplify right side
    10,129.47x = 79,029,922.94
  5. Step 5: Solve for x
    x = 79,029,922.94/10,129.47
  6. Step 6: Final answer
    x = 7,801.98

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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.