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Finding the Fourth Proportional to 40,607.70, 60,909.38 and 12,903.54

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Solution

The fourth proportional to 40,607.70, 60,909.38 and 12,903.54 is: 19,354.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,607.70 : 60,909.38 = 12,903.54 : x
  2. Step 2: Convert to fraction form
    40,607.70/60,909.38 = 12,903.54/x
  3. Step 3: Cross multiply
    40,607.70x = 60,909.38 × 12,903.54
  4. Step 4: Simplify right side
    40,607.70x = 785,946,621.21
  5. Step 5: Solve for x
    x = 785,946,621.21/40,607.70
  6. Step 6: Final answer
    x = 19,354.62

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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.