Home / 13,749.10-20,622.97-7,521.28

Finding the Fourth Proportional to 13,749.10, 20,622.97 and 7,521.28

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Solution

The fourth proportional to 13,749.10, 20,622.97 and 7,521.28 is: 11,281.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.10 : 20,622.97 = 7,521.28 : x
  2. Step 2: Convert to fraction form
    13,749.10/20,622.97 = 7,521.28/x
  3. Step 3: Cross multiply
    13,749.10x = 20,622.97 × 7,521.28
  4. Step 4: Simplify right side
    13,749.10x = 155,111,028.91
  5. Step 5: Solve for x
    x = 155,111,028.91/13,749.10
  6. Step 6: Final answer
    x = 11,281.54

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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.