Home / 11,378.37-15,702.69-6,342.63

Finding the Fourth Proportional to 11,378.37, 15,702.69 and 6,342.63

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Solution

The fourth proportional to 11,378.37, 15,702.69 and 6,342.63 is: 8,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.37 : 15,702.69 = 6,342.63 : x
  2. Step 2: Convert to fraction form
    11,378.37/15,702.69 = 6,342.63/x
  3. Step 3: Cross multiply
    11,378.37x = 15,702.69 × 6,342.63
  4. Step 4: Simplify right side
    11,378.37x = 99,596,336.82
  5. Step 5: Solve for x
    x = 99,596,336.82/11,378.37
  6. Step 6: Final answer
    x = 8,753.13

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Half scale
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Double scale
Find fourth proportional to 11,379.37, 15,704.07 and 6,343.63
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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.