Home / 12,310,829.51-16,991,287.65-8,117,136.72

Finding the Fourth Proportional to 12,310,829.51, 16,991,287.65 and 8,117,136.72

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Solution

The fourth proportional to 12,310,829.51, 16,991,287.65 and 8,117,136.72 is: 11,203,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310,829.51 : 16,991,287.65 = 8,117,136.72 : x
  2. Step 2: Convert to fraction form
    12,310,829.51/16,991,287.65 = 8,117,136.72/x
  3. Step 3: Cross multiply
    12,310,829.51x = 16,991,287.65 × 8,117,136.72
  4. Step 4: Simplify right side
    12,310,829.51x = 137,920,604,903,897.48
  5. Step 5: Solve for x
    x = 137,920,604,903,897.48/12,310,829.51
  6. Step 6: Final answer
    x = 11,203,193.48

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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.