Home / 13,681.23-18,880.11-7,393.60

Finding the Fourth Proportional to 13,681.23, 18,880.11 and 7,393.60

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Solution

The fourth proportional to 13,681.23, 18,880.11 and 7,393.60 is: 10,203.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.23 : 18,880.11 = 7,393.60 : x
  2. Step 2: Convert to fraction form
    13,681.23/18,880.11 = 7,393.60/x
  3. Step 3: Cross multiply
    13,681.23x = 18,880.11 × 7,393.60
  4. Step 4: Simplify right side
    13,681.23x = 139,592,004.90
  5. Step 5: Solve for x
    x = 139,592,004.90/13,681.23
  6. Step 6: Final answer
    x = 10,203.18

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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.