Home / 15,399.41-21,254.48-9,730.55

Finding the Fourth Proportional to 15,399.41, 21,254.48 and 9,730.55

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Solution

The fourth proportional to 15,399.41, 21,254.48 and 9,730.55 is: 13,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.41 : 21,254.48 = 9,730.55 : x
  2. Step 2: Convert to fraction form
    15,399.41/21,254.48 = 9,730.55/x
  3. Step 3: Cross multiply
    15,399.41x = 21,254.48 × 9,730.55
  4. Step 4: Simplify right side
    15,399.41x = 206,817,857.83
  5. Step 5: Solve for x
    x = 206,817,857.83/15,399.41
  6. Step 6: Final answer
    x = 13,430.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.