Home / 14,145.28-19,519.98-7,857.52

Finding the Fourth Proportional to 14,145.28, 19,519.98 and 7,857.52

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Solution

The fourth proportional to 14,145.28, 19,519.98 and 7,857.52 is: 10,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.28 : 19,519.98 = 7,857.52 : x
  2. Step 2: Convert to fraction form
    14,145.28/19,519.98 = 7,857.52/x
  3. Step 3: Cross multiply
    14,145.28x = 19,519.98 × 7,857.52
  4. Step 4: Simplify right side
    14,145.28x = 153,378,633.25
  5. Step 5: Solve for x
    x = 153,378,633.25/14,145.28
  6. Step 6: Final answer
    x = 10,843.10

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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.