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Finding the Fourth Proportional to 13,038.16, 17,992.16 and 7,069.72

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Solution

The fourth proportional to 13,038.16, 17,992.16 and 7,069.72 is: 9,755.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.16 : 17,992.16 = 7,069.72 : x
  2. Step 2: Convert to fraction form
    13,038.16/17,992.16 = 7,069.72/x
  3. Step 3: Cross multiply
    13,038.16x = 17,992.16 × 7,069.72
  4. Step 4: Simplify right side
    13,038.16x = 127,199,533.40
  5. Step 5: Solve for x
    x = 127,199,533.40/13,038.16
  6. Step 6: Final answer
    x = 9,755.94

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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.