Home / 18,465.06-27,722.10-8,611.20

Finding the Fourth Proportional to 18,465.06, 27,722.10 and 8,611.20

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Solution

The fourth proportional to 18,465.06, 27,722.10 and 8,611.20 is: 12,928.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.06 : 27,722.10 = 8,611.20 : x
  2. Step 2: Convert to fraction form
    18,465.06/27,722.10 = 8,611.20/x
  3. Step 3: Cross multiply
    18,465.06x = 27,722.10 × 8,611.20
  4. Step 4: Simplify right side
    18,465.06x = 238,720,547.52
  5. Step 5: Solve for x
    x = 238,720,547.52/18,465.06
  6. Step 6: Final answer
    x = 12,928.23

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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.