Home / 18,749.49-25,895.57-12,770.79

Finding the Fourth Proportional to 18,749.49, 25,895.57 and 12,770.79

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Solution

The fourth proportional to 18,749.49, 25,895.57 and 12,770.79 is: 17,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.49 : 25,895.57 = 12,770.79 : x
  2. Step 2: Convert to fraction form
    18,749.49/25,895.57 = 12,770.79/x
  3. Step 3: Cross multiply
    18,749.49x = 25,895.57 × 12,770.79
  4. Step 4: Simplify right side
    18,749.49x = 330,706,822.55
  5. Step 5: Solve for x
    x = 330,706,822.55/18,749.49
  6. Step 6: Final answer
    x = 17,638.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.