Home / 12,921,044.39-17,831,421.61-7,120,199.80

Finding the Fourth Proportional to 12,921,044.39, 17,831,421.61 and 7,120,199.80

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Solution

The fourth proportional to 12,921,044.39, 17,831,421.61 and 7,120,199.80 is: 9,826,085.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,044.39 : 17,831,421.61 = 7,120,199.80 : x
  2. Step 2: Convert to fraction form
    12,921,044.39/17,831,421.61 = 7,120,199.80/x
  3. Step 3: Cross multiply
    12,921,044.39x = 17,831,421.61 × 7,120,199.80
  4. Step 4: Simplify right side
    12,921,044.39x = 126,963,284,518,858.64
  5. Step 5: Solve for x
    x = 126,963,284,518,858.64/12,921,044.39
  6. Step 6: Final answer
    x = 9,826,085.32

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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.