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Finding the Fourth Proportional to 13,673.16, 20,509.74 and 10,557.72

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Solution

The fourth proportional to 13,673.16, 20,509.74 and 10,557.72 is: 15,836.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.16 : 20,509.74 = 10,557.72 : x
  2. Step 2: Convert to fraction form
    13,673.16/20,509.74 = 10,557.72/x
  3. Step 3: Cross multiply
    13,673.16x = 20,509.74 × 10,557.72
  4. Step 4: Simplify right side
    13,673.16x = 216,536,092.19
  5. Step 5: Solve for x
    x = 216,536,092.19/13,673.16
  6. Step 6: Final answer
    x = 15,836.58

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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.