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Finding the Fourth Proportional to 16,868,673.20, 25,303,009.80 and 10,491,381.20

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Solution

The fourth proportional to 16,868,673.20, 25,303,009.80 and 10,491,381.20 is: 15,737,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,868,673.20 : 25,303,009.80 = 10,491,381.20 : x
  2. Step 2: Convert to fraction form
    16,868,673.20/25,303,009.80 = 10,491,381.20/x
  3. Step 3: Cross multiply
    16,868,673.20x = 25,303,009.80 × 10,491,381.20
  4. Step 4: Simplify right side
    16,868,673.20x = 265,463,521,319,135.75
  5. Step 5: Solve for x
    x = 265,463,521,319,135.75/16,868,673.20
  6. Step 6: Final answer
    x = 15,737,071.80

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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.