Home / 12,989,504.88-17,925,075.36-7,188,531.12

Finding the Fourth Proportional to 12,989,504.88, 17,925,075.36 and 7,188,531.12

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Solution

The fourth proportional to 12,989,504.88, 17,925,075.36 and 7,188,531.12 is: 9,919,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,504.88 : 17,925,075.36 = 7,188,531.12 : x
  2. Step 2: Convert to fraction form
    12,989,504.88/17,925,075.36 = 7,188,531.12/x
  3. Step 3: Cross multiply
    12,989,504.88x = 17,925,075.36 × 7,188,531.12
  4. Step 4: Simplify right side
    12,989,504.88x = 128,854,962,053,705.20
  5. Step 5: Solve for x
    x = 128,854,962,053,705.20/12,989,504.88
  6. Step 6: Final answer
    x = 9,919,928.68

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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.