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Finding the Fourth Proportional to 9,358.56, 13,969.56 and 8,632.80

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Solution

The fourth proportional to 9,358.56, 13,969.56 and 8,632.80 is: 12,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.56 : 13,969.56 = 8,632.80 : x
  2. Step 2: Convert to fraction form
    9,358.56/13,969.56 = 8,632.80/x
  3. Step 3: Cross multiply
    9,358.56x = 13,969.56 × 8,632.80
  4. Step 4: Simplify right side
    9,358.56x = 120,596,417.57
  5. Step 5: Solve for x
    x = 120,596,417.57/9,358.56
  6. Step 6: Final answer
    x = 12,886.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.