Home / 18,907,356.30-28,361,034.45-18,078,045.90

Finding the Fourth Proportional to 18,907,356.30, 28,361,034.45 and 18,078,045.90

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Solution

The fourth proportional to 18,907,356.30, 28,361,034.45 and 18,078,045.90 is: 27,117,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907,356.30 : 28,361,034.45 = 18,078,045.90 : x
  2. Step 2: Convert to fraction form
    18,907,356.30/28,361,034.45 = 18,078,045.90/x
  3. Step 3: Cross multiply
    18,907,356.30x = 28,361,034.45 × 18,078,045.90
  4. Step 4: Simplify right side
    18,907,356.30x = 512,712,082,558,581.19
  5. Step 5: Solve for x
    x = 512,712,082,558,581.19/18,907,356.30
  6. Step 6: Final answer
    x = 27,117,068.85

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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.