Home / 13,073.28-18,039.69-7,407.60

Finding the Fourth Proportional to 13,073.28, 18,039.69 and 7,407.60

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Solution

The fourth proportional to 13,073.28, 18,039.69 and 7,407.60 is: 10,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.28 : 18,039.69 = 7,407.60 : x
  2. Step 2: Convert to fraction form
    13,073.28/18,039.69 = 7,407.60/x
  3. Step 3: Cross multiply
    13,073.28x = 18,039.69 × 7,407.60
  4. Step 4: Simplify right side
    13,073.28x = 133,630,807.64
  5. Step 5: Solve for x
    x = 133,630,807.64/13,073.28
  6. Step 6: Final answer
    x = 10,221.67

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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.