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Finding the Fourth Proportional to 13,005.67, 17,946.51 and 7,339.90

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Solution

The fourth proportional to 13,005.67, 17,946.51 and 7,339.90 is: 10,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.67 : 17,946.51 = 7,339.90 : x
  2. Step 2: Convert to fraction form
    13,005.67/17,946.51 = 7,339.90/x
  3. Step 3: Cross multiply
    13,005.67x = 17,946.51 × 7,339.90
  4. Step 4: Simplify right side
    13,005.67x = 131,725,588.75
  5. Step 5: Solve for x
    x = 131,725,588.75/13,005.67
  6. Step 6: Final answer
    x = 10,128.32

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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.