Home / 12,953.19-17,879.74-8,702.81

Finding the Fourth Proportional to 12,953.19, 17,879.74 and 8,702.81

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Solution

The fourth proportional to 12,953.19, 17,879.74 and 8,702.81 is: 12,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,953.19 : 17,879.74 = 8,702.81 : x
  2. Step 2: Convert to fraction form
    12,953.19/17,879.74 = 8,702.81/x
  3. Step 3: Cross multiply
    12,953.19x = 17,879.74 × 8,702.81
  4. Step 4: Simplify right side
    12,953.19x = 155,603,868.91
  5. Step 5: Solve for x
    x = 155,603,868.91/12,953.19
  6. Step 6: Final answer
    x = 12,012.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.