Home / 12,937.64-19,406.45-4,172.55

Finding the Fourth Proportional to 12,937.64, 19,406.45 and 4,172.55

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Solution

The fourth proportional to 12,937.64, 19,406.45 and 4,172.55 is: 6,258.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.64 : 19,406.45 = 4,172.55 : x
  2. Step 2: Convert to fraction form
    12,937.64/19,406.45 = 4,172.55/x
  3. Step 3: Cross multiply
    12,937.64x = 19,406.45 × 4,172.55
  4. Step 4: Simplify right side
    12,937.64x = 80,974,334.43
  5. Step 5: Solve for x
    x = 80,974,334.43/12,937.64
  6. Step 6: Final answer
    x = 6,258.82

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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.