Home / 12,918.88-19,374.67-7,374.84

Finding the Fourth Proportional to 12,918.88, 19,374.67 and 7,374.84

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Solution

The fourth proportional to 12,918.88, 19,374.67 and 7,374.84 is: 11,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.88 : 19,374.67 = 7,374.84 : x
  2. Step 2: Convert to fraction form
    12,918.88/19,374.67 = 7,374.84/x
  3. Step 3: Cross multiply
    12,918.88x = 19,374.67 × 7,374.84
  4. Step 4: Simplify right side
    12,918.88x = 142,885,091.30
  5. Step 5: Solve for x
    x = 142,885,091.30/12,918.88
  6. Step 6: Final answer
    x = 11,060.18

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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.