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Finding the Fourth Proportional to 43,509.66, 65,272.65 and 13,919.55

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Solution

The fourth proportional to 43,509.66, 65,272.65 and 13,919.55 is: 20,881.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,509.66 : 65,272.65 = 13,919.55 : x
  2. Step 2: Convert to fraction form
    43,509.66/65,272.65 = 13,919.55/x
  3. Step 3: Cross multiply
    43,509.66x = 65,272.65 × 13,919.55
  4. Step 4: Simplify right side
    43,509.66x = 908,565,915.31
  5. Step 5: Solve for x
    x = 908,565,915.31/43,509.66
  6. Step 6: Final answer
    x = 20,881.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.