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Finding the Fourth Proportional to 43,885.20, 65,838.20 and 14,303.20

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Solution

The fourth proportional to 43,885.20, 65,838.20 and 14,303.20 is: 21,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,885.20 : 65,838.20 = 14,303.20 : x
  2. Step 2: Convert to fraction form
    43,885.20/65,838.20 = 14,303.20/x
  3. Step 3: Cross multiply
    43,885.20x = 65,838.20 × 14,303.20
  4. Step 4: Simplify right side
    43,885.20x = 941,696,942.24
  5. Step 5: Solve for x
    x = 941,696,942.24/43,885.20
  6. Step 6: Final answer
    x = 21,458.19

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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.