Home / 15,289.24-21,099.36-9,238.64

Finding the Fourth Proportional to 15,289.24, 21,099.36 and 9,238.64

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Solution

The fourth proportional to 15,289.24, 21,099.36 and 9,238.64 is: 12,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.24 : 21,099.36 = 9,238.64 : x
  2. Step 2: Convert to fraction form
    15,289.24/21,099.36 = 9,238.64/x
  3. Step 3: Cross multiply
    15,289.24x = 21,099.36 × 9,238.64
  4. Step 4: Simplify right side
    15,289.24x = 194,929,439.10
  5. Step 5: Solve for x
    x = 194,929,439.10/15,289.24
  6. Step 6: Final answer
    x = 12,749.45

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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.