Home / 12,856.91-19,287.53-4,094.51

Finding the Fourth Proportional to 12,856.91, 19,287.53 and 4,094.51

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Solution

The fourth proportional to 12,856.91, 19,287.53 and 4,094.51 is: 6,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.91 : 19,287.53 = 4,094.51 : x
  2. Step 2: Convert to fraction form
    12,856.91/19,287.53 = 4,094.51/x
  3. Step 3: Cross multiply
    12,856.91x = 19,287.53 × 4,094.51
  4. Step 4: Simplify right side
    12,856.91x = 78,972,963.99
  5. Step 5: Solve for x
    x = 78,972,963.99/12,856.91
  6. Step 6: Final answer
    x = 6,142.45

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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.