Home / 13,270.12-19,905.67-4,385.68

Finding the Fourth Proportional to 13,270.12, 19,905.67 and 4,385.68

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Solution

The fourth proportional to 13,270.12, 19,905.67 and 4,385.68 is: 6,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.12 : 19,905.67 = 4,385.68 : x
  2. Step 2: Convert to fraction form
    13,270.12/19,905.67 = 4,385.68/x
  3. Step 3: Cross multiply
    13,270.12x = 19,905.67 × 4,385.68
  4. Step 4: Simplify right side
    13,270.12x = 87,299,898.81
  5. Step 5: Solve for x
    x = 87,299,898.81/13,270.12
  6. Step 6: Final answer
    x = 6,578.68

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1.5x scale

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.