Home / 21,030,715.80-31,546,073.70-11,960,789.40

Finding the Fourth Proportional to 21,030,715.80, 31,546,073.70 and 11,960,789.40

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Solution

The fourth proportional to 21,030,715.80, 31,546,073.70 and 11,960,789.40 is: 17,941,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030,715.80 : 31,546,073.70 = 11,960,789.40 : x
  2. Step 2: Convert to fraction form
    21,030,715.80/31,546,073.70 = 11,960,789.40/x
  3. Step 3: Cross multiply
    21,030,715.80x = 31,546,073.70 × 11,960,789.40
  4. Step 4: Simplify right side
    21,030,715.80x = 377,315,943,922,578.81
  5. Step 5: Solve for x
    x = 377,315,943,922,578.81/21,030,715.80
  6. Step 6: Final answer
    x = 17,941,184.10

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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.