Home / 13,308.40-18,365.64-7,340.17

Finding the Fourth Proportional to 13,308.40, 18,365.64 and 7,340.17

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Solution

The fourth proportional to 13,308.40, 18,365.64 and 7,340.17 is: 10,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.40 : 18,365.64 = 7,340.17 : x
  2. Step 2: Convert to fraction form
    13,308.40/18,365.64 = 7,340.17/x
  3. Step 3: Cross multiply
    13,308.40x = 18,365.64 × 7,340.17
  4. Step 4: Simplify right side
    13,308.40x = 134,806,880.75
  5. Step 5: Solve for x
    x = 134,806,880.75/13,308.40
  6. Step 6: Final answer
    x = 10,129.46

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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.