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Finding the Fourth Proportional to 17,967,019.30, 26,950,528.95 and 7,178,985.70

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Solution

The fourth proportional to 17,967,019.30, 26,950,528.95 and 7,178,985.70 is: 10,768,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,967,019.30 : 26,950,528.95 = 7,178,985.70 : x
  2. Step 2: Convert to fraction form
    17,967,019.30/26,950,528.95 = 7,178,985.70/x
  3. Step 3: Cross multiply
    17,967,019.30x = 26,950,528.95 × 7,178,985.70
  4. Step 4: Simplify right side
    17,967,019.30x = 193,477,461,939,486
  5. Step 5: Solve for x
    x = 193,477,461,939,486/17,967,019.30
  6. Step 6: Final answer
    x = 10,768,478.55

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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.