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Finding the Fourth Proportional to 28,937.70, 43,406.55 and 9,216.10

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Solution

The fourth proportional to 28,937.70, 43,406.55 and 9,216.10 is: 13,824.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.70 : 43,406.55 = 9,216.10 : x
  2. Step 2: Convert to fraction form
    28,937.70/43,406.55 = 9,216.10/x
  3. Step 3: Cross multiply
    28,937.70x = 43,406.55 × 9,216.10
  4. Step 4: Simplify right side
    28,937.70x = 400,039,105.46
  5. Step 5: Solve for x
    x = 400,039,105.46/28,937.70
  6. Step 6: Final answer
    x = 13,824.15

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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.