Home / 13,104.79-18,084.93-7,136.78

Finding the Fourth Proportional to 13,104.79, 18,084.93 and 7,136.78

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Solution

The fourth proportional to 13,104.79, 18,084.93 and 7,136.78 is: 9,848.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.79 : 18,084.93 = 7,136.78 : x
  2. Step 2: Convert to fraction form
    13,104.79/18,084.93 = 7,136.78/x
  3. Step 3: Cross multiply
    13,104.79x = 18,084.93 × 7,136.78
  4. Step 4: Simplify right side
    13,104.79x = 129,068,166.73
  5. Step 5: Solve for x
    x = 129,068,166.73/13,104.79
  6. Step 6: Final answer
    x = 9,848.93

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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.