Home / 28,163,117.21-38,858,439.83-15,939,974.21

Finding the Fourth Proportional to 28,163,117.21, 38,858,439.83 and 15,939,974.21

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Solution

The fourth proportional to 28,163,117.21, 38,858,439.83 and 15,939,974.21 is: 21,993,393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163,117.21 : 38,858,439.83 = 15,939,974.21 : x
  2. Step 2: Convert to fraction form
    28,163,117.21/38,858,439.83 = 15,939,974.21/x
  3. Step 3: Cross multiply
    28,163,117.21x = 38,858,439.83 × 15,939,974.21
  4. Step 4: Simplify right side
    28,163,117.21x = 619,402,528,457,044.75
  5. Step 5: Solve for x
    x = 619,402,528,457,044.75/28,163,117.21
  6. Step 6: Final answer
    x = 21,993,393.84

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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.