Home / 13,478.44-18,601.28-7,814.68

Finding the Fourth Proportional to 13,478.44, 18,601.28 and 7,814.68

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Solution

The fourth proportional to 13,478.44, 18,601.28 and 7,814.68 is: 10,784.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.44 : 18,601.28 = 7,814.68 : x
  2. Step 2: Convert to fraction form
    13,478.44/18,601.28 = 7,814.68/x
  3. Step 3: Cross multiply
    13,478.44x = 18,601.28 × 7,814.68
  4. Step 4: Simplify right side
    13,478.44x = 145,363,050.79
  5. Step 5: Solve for x
    x = 145,363,050.79/13,478.44
  6. Step 6: Final answer
    x = 10,784.86

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1.5x scale

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.