Home / 12,749.40-19,087.16-8,302.28

Finding the Fourth Proportional to 12,749.40, 19,087.16 and 8,302.28

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Solution

The fourth proportional to 12,749.40, 19,087.16 and 8,302.28 is: 12,429.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.40 : 19,087.16 = 8,302.28 : x
  2. Step 2: Convert to fraction form
    12,749.40/19,087.16 = 8,302.28/x
  3. Step 3: Cross multiply
    12,749.40x = 19,087.16 × 8,302.28
  4. Step 4: Simplify right side
    12,749.40x = 158,466,809.78
  5. Step 5: Solve for x
    x = 158,466,809.78/12,749.40
  6. Step 6: Final answer
    x = 12,429.35

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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.