Home / 12,820,079.87-17,691,702.09-7,018,860.08

Finding the Fourth Proportional to 12,820,079.87, 17,691,702.09 and 7,018,860.08

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Solution

The fourth proportional to 12,820,079.87, 17,691,702.09 and 7,018,860.08 is: 9,686,022.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820,079.87 : 17,691,702.09 = 7,018,860.08 : x
  2. Step 2: Convert to fraction form
    12,820,079.87/17,691,702.09 = 7,018,860.08/x
  3. Step 3: Cross multiply
    12,820,079.87x = 17,691,702.09 × 7,018,860.08
  4. Step 4: Simplify right side
    12,820,079.87x = 124,175,581,458,295.06
  5. Step 5: Solve for x
    x = 124,175,581,458,295.06/12,820,079.87
  6. Step 6: Final answer
    x = 9,686,022.46

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1.5x scale

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.