Home / 12,643.08-18,953.91-5,242.92

Finding the Fourth Proportional to 12,643.08, 18,953.91 and 5,242.92

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Solution

The fourth proportional to 12,643.08, 18,953.91 and 5,242.92 is: 7,859.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.08 : 18,953.91 = 5,242.92 : x
  2. Step 2: Convert to fraction form
    12,643.08/18,953.91 = 5,242.92/x
  3. Step 3: Cross multiply
    12,643.08x = 18,953.91 × 5,242.92
  4. Step 4: Simplify right side
    12,643.08x = 99,373,833.82
  5. Step 5: Solve for x
    x = 99,373,833.82/12,643.08
  6. Step 6: Final answer
    x = 7,859.94

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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.