Home / 12,898.88-19,348.32-6,989.12

Finding the Fourth Proportional to 12,898.88, 19,348.32 and 6,989.12

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Solution

The fourth proportional to 12,898.88, 19,348.32 and 6,989.12 is: 10,483.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.88 : 19,348.32 = 6,989.12 : x
  2. Step 2: Convert to fraction form
    12,898.88/19,348.32 = 6,989.12/x
  3. Step 3: Cross multiply
    12,898.88x = 19,348.32 × 6,989.12
  4. Step 4: Simplify right side
    12,898.88x = 135,227,730.28
  5. Step 5: Solve for x
    x = 135,227,730.28/12,898.88
  6. Step 6: Final answer
    x = 10,483.68

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Half scale
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Double scale
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Similar ratio
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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.