Home / 12,749.10-19,127.70-5,726.40

Finding the Fourth Proportional to 12,749.10, 19,127.70 and 5,726.40

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Solution

The fourth proportional to 12,749.10, 19,127.70 and 5,726.40 is: 8,591.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.10 : 19,127.70 = 5,726.40 : x
  2. Step 2: Convert to fraction form
    12,749.10/19,127.70 = 5,726.40/x
  3. Step 3: Cross multiply
    12,749.10x = 19,127.70 × 5,726.40
  4. Step 4: Simplify right side
    12,749.10x = 109,532,861.28
  5. Step 5: Solve for x
    x = 109,532,861.28/12,749.10
  6. Step 6: Final answer
    x = 8,591.42

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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.