Home / 28,003,758-42,012,721.80-7,809,002.16

Finding the Fourth Proportional to 28,003,758, 42,012,721.80 and 7,809,002.16

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Solution

The fourth proportional to 28,003,758, 42,012,721.80 and 7,809,002.16 is: 11,715,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003,758 : 42,012,721.80 = 7,809,002.16 : x
  2. Step 2: Convert to fraction form
    28,003,758/42,012,721.80 = 7,809,002.16/x
  3. Step 3: Cross multiply
    28,003,758x = 42,012,721.80 × 7,809,002.16
  4. Step 4: Simplify right side
    28,003,758x = 328,077,435,283,679.06
  5. Step 5: Solve for x
    x = 328,077,435,283,679.06/28,003,758
  6. Step 6: Final answer
    x = 11,715,478.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.