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Finding the Fourth Proportional to 28,937.10, 43,408.05 and 9,215.10

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Solution

The fourth proportional to 28,937.10, 43,408.05 and 9,215.10 is: 13,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.10 : 43,408.05 = 9,215.10 : x
  2. Step 2: Convert to fraction form
    28,937.10/43,408.05 = 9,215.10/x
  3. Step 3: Cross multiply
    28,937.10x = 43,408.05 × 9,215.10
  4. Step 4: Simplify right side
    28,937.10x = 400,009,521.56
  5. Step 5: Solve for x
    x = 400,009,521.56/28,937.10
  6. Step 6: Final answer
    x = 13,823.41

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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.