Home / 18,912,830.70-28,369,246.05-11,260,080.30

Finding the Fourth Proportional to 18,912,830.70, 28,369,246.05 and 11,260,080.30

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Solution

The fourth proportional to 18,912,830.70, 28,369,246.05 and 11,260,080.30 is: 16,890,120.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912,830.70 : 28,369,246.05 = 11,260,080.30 : x
  2. Step 2: Convert to fraction form
    18,912,830.70/28,369,246.05 = 11,260,080.30/x
  3. Step 3: Cross multiply
    18,912,830.70x = 28,369,246.05 × 11,260,080.30
  4. Step 4: Simplify right side
    18,912,830.70x = 319,439,988,573,457.88
  5. Step 5: Solve for x
    x = 319,439,988,573,457.88/18,912,830.70
  6. Step 6: Final answer
    x = 16,890,120.45

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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.