Home / 10,087.61-13,919.85-5,611.01

Finding the Fourth Proportional to 10,087.61, 13,919.85 and 5,611.01

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Solution

The fourth proportional to 10,087.61, 13,919.85 and 5,611.01 is: 7,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.61 : 13,919.85 = 5,611.01 : x
  2. Step 2: Convert to fraction form
    10,087.61/13,919.85 = 5,611.01/x
  3. Step 3: Cross multiply
    10,087.61x = 13,919.85 × 5,611.01
  4. Step 4: Simplify right side
    10,087.61x = 78,104,347.95
  5. Step 5: Solve for x
    x = 78,104,347.95/10,087.61
  6. Step 6: Final answer
    x = 7,742.61

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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.