Home / 10,905.53-15,050.66-6,430.68

Finding the Fourth Proportional to 10,905.53, 15,050.66 and 6,430.68

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Solution

The fourth proportional to 10,905.53, 15,050.66 and 6,430.68 is: 8,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.53 : 15,050.66 = 6,430.68 : x
  2. Step 2: Convert to fraction form
    10,905.53/15,050.66 = 6,430.68/x
  3. Step 3: Cross multiply
    10,905.53x = 15,050.66 × 6,430.68
  4. Step 4: Simplify right side
    10,905.53x = 96,785,946.10
  5. Step 5: Solve for x
    x = 96,785,946.10/10,905.53
  6. Step 6: Final answer
    x = 8,874.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.