Home / 13,731,014.78-18,949,686.12-7,619,443.28

Finding the Fourth Proportional to 13,731,014.78, 18,949,686.12 and 7,619,443.28

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Solution

The fourth proportional to 13,731,014.78, 18,949,686.12 and 7,619,443.28 is: 10,515,323.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731,014.78 : 18,949,686.12 = 7,619,443.28 : x
  2. Step 2: Convert to fraction form
    13,731,014.78/18,949,686.12 = 7,619,443.28/x
  3. Step 3: Cross multiply
    13,731,014.78x = 18,949,686.12 × 7,619,443.28
  4. Step 4: Simplify right side
    13,731,014.78x = 144,386,058,565,143.28
  5. Step 5: Solve for x
    x = 144,386,058,565,143.28/13,731,014.78
  6. Step 6: Final answer
    x = 10,515,323.22

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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.