Home / 15,289.10-21,099.17-9,238.51

Finding the Fourth Proportional to 15,289.10, 21,099.17 and 9,238.51

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Solution

The fourth proportional to 15,289.10, 21,099.17 and 9,238.51 is: 12,749.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.10 : 21,099.17 = 9,238.51 : x
  2. Step 2: Convert to fraction form
    15,289.10/21,099.17 = 9,238.51/x
  3. Step 3: Cross multiply
    15,289.10x = 21,099.17 × 9,238.51
  4. Step 4: Simplify right side
    15,289.10x = 194,924,771.86
  5. Step 5: Solve for x
    x = 194,924,771.86/15,289.10
  6. Step 6: Final answer
    x = 12,749.26

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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.