Home / 12,147.38-16,767.58-7,113.22

Finding the Fourth Proportional to 12,147.38, 16,767.58 and 7,113.22

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Solution

The fourth proportional to 12,147.38, 16,767.58 and 7,113.22 is: 9,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.38 : 16,767.58 = 7,113.22 : x
  2. Step 2: Convert to fraction form
    12,147.38/16,767.58 = 7,113.22/x
  3. Step 3: Cross multiply
    12,147.38x = 16,767.58 × 7,113.22
  4. Step 4: Simplify right side
    12,147.38x = 119,271,485.41
  5. Step 5: Solve for x
    x = 119,271,485.41/12,147.38
  6. Step 6: Final answer
    x = 9,818.70

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Half scale
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Double scale
Find fourth proportional to 12,148.38, 16,768.96 and 7,114.22
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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.