Home / 12,658.86-18,988.75-4,760.66

Finding the Fourth Proportional to 12,658.86, 18,988.75 and 4,760.66

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Solution

The fourth proportional to 12,658.86, 18,988.75 and 4,760.66 is: 7,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.86 : 18,988.75 = 4,760.66 : x
  2. Step 2: Convert to fraction form
    12,658.86/18,988.75 = 4,760.66/x
  3. Step 3: Cross multiply
    12,658.86x = 18,988.75 × 4,760.66
  4. Step 4: Simplify right side
    12,658.86x = 90,398,899.53
  5. Step 5: Solve for x
    x = 90,398,899.53/12,658.86
  6. Step 6: Final answer
    x = 7,141.16

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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.