Home / 13,653.20-18,829.64-10,664.40

Finding the Fourth Proportional to 13,653.20, 18,829.64 and 10,664.40

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Solution

The fourth proportional to 13,653.20, 18,829.64 and 10,664.40 is: 14,707.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.20 : 18,829.64 = 10,664.40 : x
  2. Step 2: Convert to fraction form
    13,653.20/18,829.64 = 10,664.40/x
  3. Step 3: Cross multiply
    13,653.20x = 18,829.64 × 10,664.40
  4. Step 4: Simplify right side
    13,653.20x = 200,806,812.82
  5. Step 5: Solve for x
    x = 200,806,812.82/13,653.20
  6. Step 6: Final answer
    x = 14,707.67

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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.