Home / 14,145.10-19,519.86-7,857.06

Finding the Fourth Proportional to 14,145.10, 19,519.86 and 7,857.06

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Solution

The fourth proportional to 14,145.10, 19,519.86 and 7,857.06 is: 10,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.10 : 19,519.86 = 7,857.06 : x
  2. Step 2: Convert to fraction form
    14,145.10/19,519.86 = 7,857.06/x
  3. Step 3: Cross multiply
    14,145.10x = 19,519.86 × 7,857.06
  4. Step 4: Simplify right side
    14,145.10x = 153,368,711.21
  5. Step 5: Solve for x
    x = 153,368,711.21/14,145.10
  6. Step 6: Final answer
    x = 10,842.53

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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.