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Finding the Fourth Proportional to 13,465.58, 18,588.58 and 9,640.22

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Solution

The fourth proportional to 13,465.58, 18,588.58 and 9,640.22 is: 13,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.58 : 18,588.58 = 9,640.22 : x
  2. Step 2: Convert to fraction form
    13,465.58/18,588.58 = 9,640.22/x
  3. Step 3: Cross multiply
    13,465.58x = 18,588.58 × 9,640.22
  4. Step 4: Simplify right side
    13,465.58x = 179,198,000.69
  5. Step 5: Solve for x
    x = 179,198,000.69/13,465.58
  6. Step 6: Final answer
    x = 13,307.86

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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.