Home / 21,061,640.40-31,592,460.60-18,668,187.60

Finding the Fourth Proportional to 21,061,640.40, 31,592,460.60 and 18,668,187.60

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Solution

The fourth proportional to 21,061,640.40, 31,592,460.60 and 18,668,187.60 is: 28,002,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,640.40 : 31,592,460.60 = 18,668,187.60 : x
  2. Step 2: Convert to fraction form
    21,061,640.40/31,592,460.60 = 18,668,187.60/x
  3. Step 3: Cross multiply
    21,061,640.40x = 31,592,460.60 × 18,668,187.60
  4. Step 4: Simplify right side
    21,061,640.40x = 589,773,981,226,408.62
  5. Step 5: Solve for x
    x = 589,773,981,226,408.62/21,061,640.40
  6. Step 6: Final answer
    x = 28,002,281.40

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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.