Home / 12,670.30-19,005.45-5,272.30

Finding the Fourth Proportional to 12,670.30, 19,005.45 and 5,272.30

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Solution

The fourth proportional to 12,670.30, 19,005.45 and 5,272.30 is: 7,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.30 : 19,005.45 = 5,272.30 : x
  2. Step 2: Convert to fraction form
    12,670.30/19,005.45 = 5,272.30/x
  3. Step 3: Cross multiply
    12,670.30x = 19,005.45 × 5,272.30
  4. Step 4: Simplify right side
    12,670.30x = 100,202,434.04
  5. Step 5: Solve for x
    x = 100,202,434.04/12,670.30
  6. Step 6: Final answer
    x = 7,908.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.