Home / 13,215.72-19,821.75-7,303.53

Finding the Fourth Proportional to 13,215.72, 19,821.75 and 7,303.53

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Solution

The fourth proportional to 13,215.72, 19,821.75 and 7,303.53 is: 10,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.72 : 19,821.75 = 7,303.53 : x
  2. Step 2: Convert to fraction form
    13,215.72/19,821.75 = 7,303.53/x
  3. Step 3: Cross multiply
    13,215.72x = 19,821.75 × 7,303.53
  4. Step 4: Simplify right side
    13,215.72x = 144,768,745.78
  5. Step 5: Solve for x
    x = 144,768,745.78/13,215.72
  6. Step 6: Final answer
    x = 10,954.28

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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.