Home / 13,818.72-19,070.28-7,850.28

Finding the Fourth Proportional to 13,818.72, 19,070.28 and 7,850.28

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Solution

The fourth proportional to 13,818.72, 19,070.28 and 7,850.28 is: 10,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.72 : 19,070.28 = 7,850.28 : x
  2. Step 2: Convert to fraction form
    13,818.72/19,070.28 = 7,850.28/x
  3. Step 3: Cross multiply
    13,818.72x = 19,070.28 × 7,850.28
  4. Step 4: Simplify right side
    13,818.72x = 149,707,037.68
  5. Step 5: Solve for x
    x = 149,707,037.68/13,818.72
  6. Step 6: Final answer
    x = 10,833.64

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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.