Home / 13,089.18-19,638.81-6,072.78

Finding the Fourth Proportional to 13,089.18, 19,638.81 and 6,072.78

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Solution

The fourth proportional to 13,089.18, 19,638.81 and 6,072.78 is: 9,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.18 : 19,638.81 = 6,072.78 : x
  2. Step 2: Convert to fraction form
    13,089.18/19,638.81 = 6,072.78/x
  3. Step 3: Cross multiply
    13,089.18x = 19,638.81 × 6,072.78
  4. Step 4: Simplify right side
    13,089.18x = 119,262,172.59
  5. Step 5: Solve for x
    x = 119,262,172.59/13,089.18
  6. Step 6: Final answer
    x = 9,111.51

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1.5x scale

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.