Home / 18,685,438.40-28,022,908.80-5,909,859.20

Finding the Fourth Proportional to 18,685,438.40, 28,022,908.80 and 5,909,859.20

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Solution

The fourth proportional to 18,685,438.40, 28,022,908.80 and 5,909,859.20 is: 8,863,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,438.40 : 28,022,908.80 = 5,909,859.20 : x
  2. Step 2: Convert to fraction form
    18,685,438.40/28,022,908.80 = 5,909,859.20/x
  3. Step 3: Cross multiply
    18,685,438.40x = 28,022,908.80 × 5,909,859.20
  4. Step 4: Simplify right side
    18,685,438.40x = 165,611,445,382,440.97
  5. Step 5: Solve for x
    x = 165,611,445,382,440.97/18,685,438.40
  6. Step 6: Final answer
    x = 8,863,128.70

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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.