Home / 31,386.45-47,079.39-8,012.82

Finding the Fourth Proportional to 31,386.45, 47,079.39 and 8,012.82

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Solution

The fourth proportional to 31,386.45, 47,079.39 and 8,012.82 is: 12,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.45 : 47,079.39 = 8,012.82 : x
  2. Step 2: Convert to fraction form
    31,386.45/47,079.39 = 8,012.82/x
  3. Step 3: Cross multiply
    31,386.45x = 47,079.39 × 8,012.82
  4. Step 4: Simplify right side
    31,386.45x = 377,238,677.78
  5. Step 5: Solve for x
    x = 377,238,677.78/31,386.45
  6. Step 6: Final answer
    x = 12,019.16

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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.