Home / 13,120.34-19,681.56-4,113.83

Finding the Fourth Proportional to 13,120.34, 19,681.56 and 4,113.83

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Solution

The fourth proportional to 13,120.34, 19,681.56 and 4,113.83 is: 6,171.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.34 : 19,681.56 = 4,113.83 : x
  2. Step 2: Convert to fraction form
    13,120.34/19,681.56 = 4,113.83/x
  3. Step 3: Cross multiply
    13,120.34x = 19,681.56 × 4,113.83
  4. Step 4: Simplify right side
    13,120.34x = 80,966,641.18
  5. Step 5: Solve for x
    x = 80,966,641.18/13,120.34
  6. Step 6: Final answer
    x = 6,171.08

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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.