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Finding the Fourth Proportional to 9,631.40, 14,447.10 and 9,415.40

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Solution

The fourth proportional to 9,631.40, 14,447.10 and 9,415.40 is: 14,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,631.40 : 14,447.10 = 9,415.40 : x
  2. Step 2: Convert to fraction form
    9,631.40/14,447.10 = 9,415.40/x
  3. Step 3: Cross multiply
    9,631.40x = 14,447.10 × 9,415.40
  4. Step 4: Simplify right side
    9,631.40x = 136,025,225.34
  5. Step 5: Solve for x
    x = 136,025,225.34/9,631.40
  6. Step 6: Final answer
    x = 14,123.10

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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.