Home / 13,136.15-18,130.82-8,355.17

Finding the Fourth Proportional to 13,136.15, 18,130.82 and 8,355.17

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Solution

The fourth proportional to 13,136.15, 18,130.82 and 8,355.17 is: 11,532.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.15 : 18,130.82 = 8,355.17 : x
  2. Step 2: Convert to fraction form
    13,136.15/18,130.82 = 8,355.17/x
  3. Step 3: Cross multiply
    13,136.15x = 18,130.82 × 8,355.17
  4. Step 4: Simplify right side
    13,136.15x = 151,486,083.34
  5. Step 5: Solve for x
    x = 151,486,083.34/13,136.15
  6. Step 6: Final answer
    x = 11,532.00

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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.