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Finding the Fourth Proportional to 13,026,259.96, 17,978,391.32 and 7,226,910.12

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Solution

The fourth proportional to 13,026,259.96, 17,978,391.32 and 7,226,910.12 is: 9,974,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,026,259.96 : 17,978,391.32 = 7,226,910.12 : x
  2. Step 2: Convert to fraction form
    13,026,259.96/17,978,391.32 = 7,226,910.12/x
  3. Step 3: Cross multiply
    13,026,259.96x = 17,978,391.32 × 7,226,910.12
  4. Step 4: Simplify right side
    13,026,259.96x = 129,928,218,171,828.16
  5. Step 5: Solve for x
    x = 129,928,218,171,828.16/13,026,259.96
  6. Step 6: Final answer
    x = 9,974,330.20

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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.