Home / 12,991.59-19,487.66-4,983.53

Finding the Fourth Proportional to 12,991.59, 19,487.66 and 4,983.53

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Solution

The fourth proportional to 12,991.59, 19,487.66 and 4,983.53 is: 7,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.59 : 19,487.66 = 4,983.53 : x
  2. Step 2: Convert to fraction form
    12,991.59/19,487.66 = 4,983.53/x
  3. Step 3: Cross multiply
    12,991.59x = 19,487.66 × 4,983.53
  4. Step 4: Simplify right side
    12,991.59x = 97,117,215.88
  5. Step 5: Solve for x
    x = 97,117,215.88/12,991.59
  6. Step 6: Final answer
    x = 7,475.39

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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.