Home / 10,518,640.10-15,780,912.60-5,127,466.40

Finding the Fourth Proportional to 10,518,640.10, 15,780,912.60 and 5,127,466.40

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Solution

The fourth proportional to 10,518,640.10, 15,780,912.60 and 5,127,466.40 is: 7,692,638.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518,640.10 : 15,780,912.60 = 5,127,466.40 : x
  2. Step 2: Convert to fraction form
    10,518,640.10/15,780,912.60 = 5,127,466.40/x
  3. Step 3: Cross multiply
    10,518,640.10x = 15,780,912.60 × 5,127,466.40
  4. Step 4: Simplify right side
    10,518,640.10x = 80,916,099,117,836.64
  5. Step 5: Solve for x
    x = 80,916,099,117,836.64/10,518,640.10
  6. Step 6: Final answer
    x = 7,692,638.82

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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.