Home / 13,898.79-19,181.21-7,611.17

Finding the Fourth Proportional to 13,898.79, 19,181.21 and 7,611.17

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Solution

The fourth proportional to 13,898.79, 19,181.21 and 7,611.17 is: 10,503.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.79 : 19,181.21 = 7,611.17 : x
  2. Step 2: Convert to fraction form
    13,898.79/19,181.21 = 7,611.17/x
  3. Step 3: Cross multiply
    13,898.79x = 19,181.21 × 7,611.17
  4. Step 4: Simplify right side
    13,898.79x = 145,991,316.15
  5. Step 5: Solve for x
    x = 145,991,316.15/13,898.79
  6. Step 6: Final answer
    x = 10,503.89

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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.