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Finding the Fourth Proportional to 28,712.17, 43,058.69 and 12,069.10

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Solution

The fourth proportional to 28,712.17, 43,058.69 and 12,069.10 is: 18,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.17 : 43,058.69 = 12,069.10 : x
  2. Step 2: Convert to fraction form
    28,712.17/43,058.69 = 12,069.10/x
  3. Step 3: Cross multiply
    28,712.17x = 43,058.69 × 12,069.10
  4. Step 4: Simplify right side
    28,712.17x = 519,679,674.22
  5. Step 5: Solve for x
    x = 519,679,674.22/28,712.17
  6. Step 6: Final answer
    x = 18,099.63

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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.