Home / 13,137.06-19,705.59-7,931.94

Finding the Fourth Proportional to 13,137.06, 19,705.59 and 7,931.94

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Solution

The fourth proportional to 13,137.06, 19,705.59 and 7,931.94 is: 11,897.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.06 : 19,705.59 = 7,931.94 : x
  2. Step 2: Convert to fraction form
    13,137.06/19,705.59 = 7,931.94/x
  3. Step 3: Cross multiply
    13,137.06x = 19,705.59 × 7,931.94
  4. Step 4: Simplify right side
    13,137.06x = 156,303,557.54
  5. Step 5: Solve for x
    x = 156,303,557.54/13,137.06
  6. Step 6: Final answer
    x = 11,897.91

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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.