Home / 12,961.85-19,434.41-7,116.89

Finding the Fourth Proportional to 12,961.85, 19,434.41 and 7,116.89

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Solution

The fourth proportional to 12,961.85, 19,434.41 and 7,116.89 is: 10,670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.85 : 19,434.41 = 7,116.89 : x
  2. Step 2: Convert to fraction form
    12,961.85/19,434.41 = 7,116.89/x
  3. Step 3: Cross multiply
    12,961.85x = 19,434.41 × 7,116.89
  4. Step 4: Simplify right side
    12,961.85x = 138,312,522.60
  5. Step 5: Solve for x
    x = 138,312,522.60/12,961.85
  6. Step 6: Final answer
    x = 10,670.74

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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.