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Finding the Fourth Proportional to 14,881.19, 20,533.88 and 8,911.60

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Solution

The fourth proportional to 14,881.19, 20,533.88 and 8,911.60 is: 12,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,881.19 : 20,533.88 = 8,911.60 : x
  2. Step 2: Convert to fraction form
    14,881.19/20,533.88 = 8,911.60/x
  3. Step 3: Cross multiply
    14,881.19x = 20,533.88 × 8,911.60
  4. Step 4: Simplify right side
    14,881.19x = 182,989,629.12
  5. Step 5: Solve for x
    x = 182,989,629.12/14,881.19
  6. Step 6: Final answer
    x = 12,296.70

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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.