Home / 21,277,301.20-31,894,956.60-10,485,768.40

Finding the Fourth Proportional to 21,277,301.20, 31,894,956.60 and 10,485,768.40

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Solution

The fourth proportional to 21,277,301.20, 31,894,956.60 and 10,485,768.40 is: 15,718,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277,301.20 : 31,894,956.60 = 10,485,768.40 : x
  2. Step 2: Convert to fraction form
    21,277,301.20/31,894,956.60 = 10,485,768.40/x
  3. Step 3: Cross multiply
    21,277,301.20x = 31,894,956.60 × 10,485,768.40
  4. Step 4: Simplify right side
    21,277,301.20x = 334,443,128,035,651.44
  5. Step 5: Solve for x
    x = 334,443,128,035,651.44/21,277,301.20
  6. Step 6: Final answer
    x = 15,718,305.86

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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.