Home / 12,937.02-19,391.71-7,378.39

Finding the Fourth Proportional to 12,937.02, 19,391.71 and 7,378.39

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Solution

The fourth proportional to 12,937.02, 19,391.71 and 7,378.39 is: 11,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.02 : 19,391.71 = 7,378.39 : x
  2. Step 2: Convert to fraction form
    12,937.02/19,391.71 = 7,378.39/x
  3. Step 3: Cross multiply
    12,937.02x = 19,391.71 × 7,378.39
  4. Step 4: Simplify right side
    12,937.02x = 143,079,599.15
  5. Step 5: Solve for x
    x = 143,079,599.15/12,937.02
  6. Step 6: Final answer
    x = 11,059.70

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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.