Home / 10,185.90-15,276.15-3,611.40

Finding the Fourth Proportional to 10,185.90, 15,276.15 and 3,611.40

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Solution

The fourth proportional to 10,185.90, 15,276.15 and 3,611.40 is: 5,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.90 : 15,276.15 = 3,611.40 : x
  2. Step 2: Convert to fraction form
    10,185.90/15,276.15 = 3,611.40/x
  3. Step 3: Cross multiply
    10,185.90x = 15,276.15 × 3,611.40
  4. Step 4: Simplify right side
    10,185.90x = 55,168,288.11
  5. Step 5: Solve for x
    x = 55,168,288.11/10,185.90
  6. Step 6: Final answer
    x = 5,416.14

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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.