Home / 18,828,819.72-28,218,949.02-9,111,148.20

Finding the Fourth Proportional to 18,828,819.72, 28,218,949.02 and 9,111,148.20

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Solution

The fourth proportional to 18,828,819.72, 28,218,949.02 and 9,111,148.20 is: 13,654,973.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828,819.72 : 28,218,949.02 = 9,111,148.20 : x
  2. Step 2: Convert to fraction form
    18,828,819.72/28,218,949.02 = 9,111,148.20/x
  3. Step 3: Cross multiply
    18,828,819.72x = 28,218,949.02 × 9,111,148.20
  4. Step 4: Simplify right side
    18,828,819.72x = 257,107,026,569,464.75
  5. Step 5: Solve for x
    x = 257,107,026,569,464.75/18,828,819.72
  6. Step 6: Final answer
    x = 13,654,973.09

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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.