Home / 13,681.45-18,880.38-7,393.83

Finding the Fourth Proportional to 13,681.45, 18,880.38 and 7,393.83

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Solution

The fourth proportional to 13,681.45, 18,880.38 and 7,393.83 is: 10,203.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.45 : 18,880.38 = 7,393.83 : x
  2. Step 2: Convert to fraction form
    13,681.45/18,880.38 = 7,393.83/x
  3. Step 3: Cross multiply
    13,681.45x = 18,880.38 × 7,393.83
  4. Step 4: Simplify right side
    13,681.45x = 139,598,320.06
  5. Step 5: Solve for x
    x = 139,598,320.06/13,681.45
  6. Step 6: Final answer
    x = 10,203.47

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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.