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Finding the Fourth Proportional to 10,079.42, 13,901.90 and 8,946.28

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Solution

The fourth proportional to 10,079.42, 13,901.90 and 8,946.28 is: 12,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.42 : 13,901.90 = 8,946.28 : x
  2. Step 2: Convert to fraction form
    10,079.42/13,901.90 = 8,946.28/x
  3. Step 3: Cross multiply
    10,079.42x = 13,901.90 × 8,946.28
  4. Step 4: Simplify right side
    10,079.42x = 124,370,289.93
  5. Step 5: Solve for x
    x = 124,370,289.93/10,079.42
  6. Step 6: Final answer
    x = 12,339.03

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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.