Home / 13,071,907.68-18,038,870.40-7,111,116.84

Finding the Fourth Proportional to 13,071,907.68, 18,038,870.40 and 7,111,116.84

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Solution

The fourth proportional to 13,071,907.68, 18,038,870.40 and 7,111,116.84 is: 9,813,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071,907.68 : 18,038,870.40 = 7,111,116.84 : x
  2. Step 2: Convert to fraction form
    13,071,907.68/18,038,870.40 = 7,111,116.84/x
  3. Step 3: Cross multiply
    13,071,907.68x = 18,038,870.40 × 7,111,116.84
  4. Step 4: Simplify right side
    13,071,907.68x = 128,276,515,170,329.98
  5. Step 5: Solve for x
    x = 128,276,515,170,329.98/13,071,907.68
  6. Step 6: Final answer
    x = 9,813,144.21

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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.