Home / 12,938,144.40-17,860,377.96-8,356,700.16

Finding the Fourth Proportional to 12,938,144.40, 17,860,377.96 and 8,356,700.16

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Solution

The fourth proportional to 12,938,144.40, 17,860,377.96 and 8,356,700.16 is: 11,535,952.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,144.40 : 17,860,377.96 = 8,356,700.16 : x
  2. Step 2: Convert to fraction form
    12,938,144.40/17,860,377.96 = 8,356,700.16/x
  3. Step 3: Cross multiply
    12,938,144.40x = 17,860,377.96 × 8,356,700.16
  4. Step 4: Simplify right side
    12,938,144.40x = 149,253,823,355,992.47
  5. Step 5: Solve for x
    x = 149,253,823,355,992.47/12,938,144.40
  6. Step 6: Final answer
    x = 11,535,952.82

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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.