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Finding the Fourth Proportional to 43,465.62, 65,210.80 and 13,885.76

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Solution

The fourth proportional to 43,465.62, 65,210.80 and 13,885.76 is: 20,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,465.62 : 65,210.80 = 13,885.76 : x
  2. Step 2: Convert to fraction form
    43,465.62/65,210.80 = 13,885.76/x
  3. Step 3: Cross multiply
    43,465.62x = 65,210.80 × 13,885.76
  4. Step 4: Simplify right side
    43,465.62x = 905,501,518.21
  5. Step 5: Solve for x
    x = 905,501,518.21/43,465.62
  6. Step 6: Final answer
    x = 20,832.59

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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.