Home / 12,749.40-19,117.26-4,427.28

Finding the Fourth Proportional to 12,749.40, 19,117.26 and 4,427.28

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Solution

The fourth proportional to 12,749.40, 19,117.26 and 4,427.28 is: 6,638.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.40 : 19,117.26 = 4,427.28 : x
  2. Step 2: Convert to fraction form
    12,749.40/19,117.26 = 4,427.28/x
  3. Step 3: Cross multiply
    12,749.40x = 19,117.26 × 4,427.28
  4. Step 4: Simplify right side
    12,749.40x = 84,637,462.85
  5. Step 5: Solve for x
    x = 84,637,462.85/12,749.40
  6. Step 6: Final answer
    x = 6,638.54

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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.