Home / 13,048.21-18,011.20-7,743.03

Finding the Fourth Proportional to 13,048.21, 18,011.20 and 7,743.03

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Solution

The fourth proportional to 13,048.21, 18,011.20 and 7,743.03 is: 10,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,048.21 : 18,011.20 = 7,743.03 : x
  2. Step 2: Convert to fraction form
    13,048.21/18,011.20 = 7,743.03/x
  3. Step 3: Cross multiply
    13,048.21x = 18,011.20 × 7,743.03
  4. Step 4: Simplify right side
    13,048.21x = 139,461,236.27
  5. Step 5: Solve for x
    x = 139,461,236.27/13,048.21
  6. Step 6: Final answer
    x = 10,688.15

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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.