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Finding the Fourth Proportional to 12,744.95, 19,081.98 and 9,615.51

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Solution

The fourth proportional to 12,744.95, 19,081.98 and 9,615.51 is: 14,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,744.95 : 19,081.98 = 9,615.51 : x
  2. Step 2: Convert to fraction form
    12,744.95/19,081.98 = 9,615.51/x
  3. Step 3: Cross multiply
    12,744.95x = 19,081.98 × 9,615.51
  4. Step 4: Simplify right side
    12,744.95x = 183,482,969.51
  5. Step 5: Solve for x
    x = 183,482,969.51/12,744.95
  6. Step 6: Final answer
    x = 14,396.53

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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.