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Finding the Fourth Proportional to 28,663.56, 43,005.42 and 8,947.08

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Solution

The fourth proportional to 28,663.56, 43,005.42 and 8,947.08 is: 13,423.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.56 : 43,005.42 = 8,947.08 : x
  2. Step 2: Convert to fraction form
    28,663.56/43,005.42 = 8,947.08/x
  3. Step 3: Cross multiply
    28,663.56x = 43,005.42 × 8,947.08
  4. Step 4: Simplify right side
    28,663.56x = 384,772,933.17
  5. Step 5: Solve for x
    x = 384,772,933.17/28,663.56
  6. Step 6: Final answer
    x = 13,423.77

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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.