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Finding the Fourth Proportional to 43,602.91, 65,392.40 and 12,005.55

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Solution

The fourth proportional to 43,602.91, 65,392.40 and 12,005.55 is: 18,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,602.91 : 65,392.40 = 12,005.55 : x
  2. Step 2: Convert to fraction form
    43,602.91/65,392.40 = 12,005.55/x
  3. Step 3: Cross multiply
    43,602.91x = 65,392.40 × 12,005.55
  4. Step 4: Simplify right side
    43,602.91x = 785,071,690.30
  5. Step 5: Solve for x
    x = 785,071,690.30/43,602.91
  6. Step 6: Final answer
    x = 18,005.03

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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.