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Finding the Fourth Proportional to 14,640.10, 20,201.52 and 8,670.40

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Solution

The fourth proportional to 14,640.10, 20,201.52 and 8,670.40 is: 11,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.10 : 20,201.52 = 8,670.40 : x
  2. Step 2: Convert to fraction form
    14,640.10/20,201.52 = 8,670.40/x
  3. Step 3: Cross multiply
    14,640.10x = 20,201.52 × 8,670.40
  4. Step 4: Simplify right side
    14,640.10x = 175,155,259.01
  5. Step 5: Solve for x
    x = 175,155,259.01/14,640.10
  6. Step 6: Final answer
    x = 11,964.08

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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.