Home / 13,328.96-18,395.52-7,743.20

Finding the Fourth Proportional to 13,328.96, 18,395.52 and 7,743.20

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Solution

The fourth proportional to 13,328.96, 18,395.52 and 7,743.20 is: 10,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.96 : 18,395.52 = 7,743.20 : x
  2. Step 2: Convert to fraction form
    13,328.96/18,395.52 = 7,743.20/x
  3. Step 3: Cross multiply
    13,328.96x = 18,395.52 × 7,743.20
  4. Step 4: Simplify right side
    13,328.96x = 142,440,190.46
  5. Step 5: Solve for x
    x = 142,440,190.46/13,328.96
  6. Step 6: Final answer
    x = 10,686.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.