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Finding the Fourth Proportional to 28,626.05, 42,941.90 and 9,903.44

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Solution

The fourth proportional to 28,626.05, 42,941.90 and 9,903.44 is: 14,856.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,626.05 : 42,941.90 = 9,903.44 : x
  2. Step 2: Convert to fraction form
    28,626.05/42,941.90 = 9,903.44/x
  3. Step 3: Cross multiply
    28,626.05x = 42,941.90 × 9,903.44
  4. Step 4: Simplify right side
    28,626.05x = 425,272,340.19
  5. Step 5: Solve for x
    x = 425,272,340.19/28,626.05
  6. Step 6: Final answer
    x = 14,856.13

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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.