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Finding the Fourth Proportional to 28,874.70, 43,312.05 and 13,322.70

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Solution

The fourth proportional to 28,874.70, 43,312.05 and 13,322.70 is: 19,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.70 : 43,312.05 = 13,322.70 : x
  2. Step 2: Convert to fraction form
    28,874.70/43,312.05 = 13,322.70/x
  3. Step 3: Cross multiply
    28,874.70x = 43,312.05 × 13,322.70
  4. Step 4: Simplify right side
    28,874.70x = 577,033,448.54
  5. Step 5: Solve for x
    x = 577,033,448.54/28,874.70
  6. Step 6: Final answer
    x = 19,984.05

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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.