Home / 13,739.40-18,960.12-7,451.64

Finding the Fourth Proportional to 13,739.40, 18,960.12 and 7,451.64

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Solution

The fourth proportional to 13,739.40, 18,960.12 and 7,451.64 is: 10,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.40 : 18,960.12 = 7,451.64 : x
  2. Step 2: Convert to fraction form
    13,739.40/18,960.12 = 7,451.64/x
  3. Step 3: Cross multiply
    13,739.40x = 18,960.12 × 7,451.64
  4. Step 4: Simplify right side
    13,739.40x = 141,283,988.60
  5. Step 5: Solve for x
    x = 141,283,988.60/13,739.40
  6. Step 6: Final answer
    x = 10,283.13

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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.