Home / 12,961.44-19,461.60-7,421.04

Finding the Fourth Proportional to 12,961.44, 19,461.60 and 7,421.04

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Solution

The fourth proportional to 12,961.44, 19,461.60 and 7,421.04 is: 11,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.44 : 19,461.60 = 7,421.04 : x
  2. Step 2: Convert to fraction form
    12,961.44/19,461.60 = 7,421.04/x
  3. Step 3: Cross multiply
    12,961.44x = 19,461.60 × 7,421.04
  4. Step 4: Simplify right side
    12,961.44x = 144,425,312.06
  5. Step 5: Solve for x
    x = 144,425,312.06/12,961.44
  6. Step 6: Final answer
    x = 11,142.69

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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.