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Finding the Fourth Proportional to 17,966,842.80, 26,950,264.20 and 7,178,809.20

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Solution

The fourth proportional to 17,966,842.80, 26,950,264.20 and 7,178,809.20 is: 10,768,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,966,842.80 : 26,950,264.20 = 7,178,809.20 : x
  2. Step 2: Convert to fraction form
    17,966,842.80/26,950,264.20 = 7,178,809.20/x
  3. Step 3: Cross multiply
    17,966,842.80x = 26,950,264.20 × 7,178,809.20
  4. Step 4: Simplify right side
    17,966,842.80x = 193,470,804,581,390.62
  5. Step 5: Solve for x
    x = 193,470,804,581,390.62/17,966,842.80
  6. Step 6: Final answer
    x = 10,768,213.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.