Home / 13,639.28-20,459.64-5,840.24

Finding the Fourth Proportional to 13,639.28, 20,459.64 and 5,840.24

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Solution

The fourth proportional to 13,639.28, 20,459.64 and 5,840.24 is: 8,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.28 : 20,459.64 = 5,840.24 : x
  2. Step 2: Convert to fraction form
    13,639.28/20,459.64 = 5,840.24/x
  3. Step 3: Cross multiply
    13,639.28x = 20,459.64 × 5,840.24
  4. Step 4: Simplify right side
    13,639.28x = 119,489,207.91
  5. Step 5: Solve for x
    x = 119,489,207.91/13,639.28
  6. Step 6: Final answer
    x = 8,760.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.