Home / 13,321.47-19,988.10-6,994.86

Finding the Fourth Proportional to 13,321.47, 19,988.10 and 6,994.86

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Solution

The fourth proportional to 13,321.47, 19,988.10 and 6,994.86 is: 10,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.47 : 19,988.10 = 6,994.86 : x
  2. Step 2: Convert to fraction form
    13,321.47/19,988.10 = 6,994.86/x
  3. Step 3: Cross multiply
    13,321.47x = 19,988.10 × 6,994.86
  4. Step 4: Simplify right side
    13,321.47x = 139,813,961.17
  5. Step 5: Solve for x
    x = 139,813,961.17/13,321.47
  6. Step 6: Final answer
    x = 10,495.39

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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.