Home / 18,686,999.40-28,025,250.30-5,911,420.20

Finding the Fourth Proportional to 18,686,999.40, 28,025,250.30 and 5,911,420.20

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Solution

The fourth proportional to 18,686,999.40, 28,025,250.30 and 5,911,420.20 is: 8,865,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,999.40 : 28,025,250.30 = 5,911,420.20 : x
  2. Step 2: Convert to fraction form
    18,686,999.40/28,025,250.30 = 5,911,420.20/x
  3. Step 3: Cross multiply
    18,686,999.40x = 28,025,250.30 × 5,911,420.20
  4. Step 4: Simplify right side
    18,686,999.40x = 165,669,030,733,476.06
  5. Step 5: Solve for x
    x = 165,669,030,733,476.06/18,686,999.40
  6. Step 6: Final answer
    x = 8,865,469.90

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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.