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Finding the Fourth Proportional to 8,953.86, 13,433.10 and 8,391.05

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Solution

The fourth proportional to 8,953.86, 13,433.10 and 8,391.05 is: 12,588.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.86 : 13,433.10 = 8,391.05 : x
  2. Step 2: Convert to fraction form
    8,953.86/13,433.10 = 8,391.05/x
  3. Step 3: Cross multiply
    8,953.86x = 13,433.10 × 8,391.05
  4. Step 4: Simplify right side
    8,953.86x = 112,717,813.76
  5. Step 5: Solve for x
    x = 112,717,813.76/8,953.86
  6. Step 6: Final answer
    x = 12,588.74

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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.