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Finding the Fourth Proportional to 12,756.34, 17,603.04 and 7,091.02

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Solution

The fourth proportional to 12,756.34, 17,603.04 and 7,091.02 is: 9,785.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.34 : 17,603.04 = 7,091.02 : x
  2. Step 2: Convert to fraction form
    12,756.34/17,603.04 = 7,091.02/x
  3. Step 3: Cross multiply
    12,756.34x = 17,603.04 × 7,091.02
  4. Step 4: Simplify right side
    12,756.34x = 124,823,508.70
  5. Step 5: Solve for x
    x = 124,823,508.70/12,756.34
  6. Step 6: Final answer
    x = 9,785.21

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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.