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Finding the Fourth Proportional to 14,989.83, 20,699.28 and 9,334.28

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Solution

The fourth proportional to 14,989.83, 20,699.28 and 9,334.28 is: 12,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,989.83 : 20,699.28 = 9,334.28 : x
  2. Step 2: Convert to fraction form
    14,989.83/20,699.28 = 9,334.28/x
  3. Step 3: Cross multiply
    14,989.83x = 20,699.28 × 9,334.28
  4. Step 4: Simplify right side
    14,989.83x = 193,212,771.82
  5. Step 5: Solve for x
    x = 193,212,771.82/14,989.83
  6. Step 6: Final answer
    x = 12,889.59

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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.