Home / 12,818,870.49-17,690,040.74-7,017,652.21

Finding the Fourth Proportional to 12,818,870.49, 17,690,040.74 and 7,017,652.21

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Solution

The fourth proportional to 12,818,870.49, 17,690,040.74 and 7,017,652.21 is: 9,684,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818,870.49 : 17,690,040.74 = 7,017,652.21 : x
  2. Step 2: Convert to fraction form
    12,818,870.49/17,690,040.74 = 7,017,652.21/x
  3. Step 3: Cross multiply
    12,818,870.49x = 17,690,040.74 × 7,017,652.21
  4. Step 4: Simplify right side
    12,818,870.49x = 124,142,553,431,045
  5. Step 5: Solve for x
    x = 124,142,553,431,045/12,818,870.49
  6. Step 6: Final answer
    x = 9,684,359.75

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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.