Home / 12,931.72-19,397.07-3,697.72

Finding the Fourth Proportional to 12,931.72, 19,397.07 and 3,697.72

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Solution

The fourth proportional to 12,931.72, 19,397.07 and 3,697.72 is: 5,546.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.72 : 19,397.07 = 3,697.72 : x
  2. Step 2: Convert to fraction form
    12,931.72/19,397.07 = 3,697.72/x
  3. Step 3: Cross multiply
    12,931.72x = 19,397.07 × 3,697.72
  4. Step 4: Simplify right side
    12,931.72x = 71,724,885.19
  5. Step 5: Solve for x
    x = 71,724,885.19/12,931.72
  6. Step 6: Final answer
    x = 5,546.43

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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.