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Finding the Fourth Proportional to 43,477.52, 65,214.03 and 12,312.86

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Solution

The fourth proportional to 43,477.52, 65,214.03 and 12,312.86 is: 18,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,477.52 : 65,214.03 = 12,312.86 : x
  2. Step 2: Convert to fraction form
    43,477.52/65,214.03 = 12,312.86/x
  3. Step 3: Cross multiply
    43,477.52x = 65,214.03 × 12,312.86
  4. Step 4: Simplify right side
    43,477.52x = 802,971,221.43
  5. Step 5: Solve for x
    x = 802,971,221.43/43,477.52
  6. Step 6: Final answer
    x = 18,468.65

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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.