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Finding the Fourth Proportional to 16,485.66, 22,749.89 and 9,411.93

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Solution

The fourth proportional to 16,485.66, 22,749.89 and 9,411.93 is: 12,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,485.66 : 22,749.89 = 9,411.93 : x
  2. Step 2: Convert to fraction form
    16,485.66/22,749.89 = 9,411.93/x
  3. Step 3: Cross multiply
    16,485.66x = 22,749.89 × 9,411.93
  4. Step 4: Simplify right side
    16,485.66x = 214,120,325.13
  5. Step 5: Solve for x
    x = 214,120,325.13/16,485.66
  6. Step 6: Final answer
    x = 12,988.28

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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.