Home / 12,954.89-19,420.47-6,290.00

Finding the Fourth Proportional to 12,954.89, 19,420.47 and 6,290.00

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Solution

The fourth proportional to 12,954.89, 19,420.47 and 6,290.00 is: 9,429.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.89 : 19,420.47 = 6,290.00 : x
  2. Step 2: Convert to fraction form
    12,954.89/19,420.47 = 6,290.00/x
  3. Step 3: Cross multiply
    12,954.89x = 19,420.47 × 6,290.00
  4. Step 4: Simplify right side
    12,954.89x = 122,154,659.20
  5. Step 5: Solve for x
    x = 122,154,659.20/12,954.89
  6. Step 6: Final answer
    x = 9,429.24

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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.