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Finding the Fourth Proportional to 13,904.10, 20,807.55 and 12,737.70

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Solution

The fourth proportional to 13,904.10, 20,807.55 and 12,737.70 is: 19,062.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904.10 : 20,807.55 = 12,737.70 : x
  2. Step 2: Convert to fraction form
    13,904.10/20,807.55 = 12,737.70/x
  3. Step 3: Cross multiply
    13,904.10x = 20,807.55 × 12,737.70
  4. Step 4: Simplify right side
    13,904.10x = 265,040,329.64
  5. Step 5: Solve for x
    x = 265,040,329.64/13,904.10
  6. Step 6: Final answer
    x = 19,062.03

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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.