Home / 13,704.79-20,557.15-5,378.98

Finding the Fourth Proportional to 13,704.79, 20,557.15 and 5,378.98

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Solution

The fourth proportional to 13,704.79, 20,557.15 and 5,378.98 is: 8,068.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.79 : 20,557.15 = 5,378.98 : x
  2. Step 2: Convert to fraction form
    13,704.79/20,557.15 = 5,378.98/x
  3. Step 3: Cross multiply
    13,704.79x = 20,557.15 × 5,378.98
  4. Step 4: Simplify right side
    13,704.79x = 110,576,472.41
  5. Step 5: Solve for x
    x = 110,576,472.41/13,704.79
  6. Step 6: Final answer
    x = 8,068.45

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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.