Home / 12,658.86-18,968.76-5,257.08

Finding the Fourth Proportional to 12,658.86, 18,968.76 and 5,257.08

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Solution

The fourth proportional to 12,658.86, 18,968.76 and 5,257.08 is: 7,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.86 : 18,968.76 = 5,257.08 : x
  2. Step 2: Convert to fraction form
    12,658.86/18,968.76 = 5,257.08/x
  3. Step 3: Cross multiply
    12,658.86x = 18,968.76 × 5,257.08
  4. Step 4: Simplify right side
    12,658.86x = 99,720,288.82
  5. Step 5: Solve for x
    x = 99,720,288.82/12,658.86
  6. Step 6: Final answer
    x = 7,877.51

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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.