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Finding the Fourth Proportional to 15,124.52, 20,871.94 and 8,835.64

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Solution

The fourth proportional to 15,124.52, 20,871.94 and 8,835.64 is: 12,193.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.52 : 20,871.94 = 8,835.64 : x
  2. Step 2: Convert to fraction form
    15,124.52/20,871.94 = 8,835.64/x
  3. Step 3: Cross multiply
    15,124.52x = 20,871.94 × 8,835.64
  4. Step 4: Simplify right side
    15,124.52x = 184,416,947.94
  5. Step 5: Solve for x
    x = 184,416,947.94/15,124.52
  6. Step 6: Final answer
    x = 12,193.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.