Home / 13,140.12-19,703.36-4,818

Finding the Fourth Proportional to 13,140.12, 19,703.36 and 4,818

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Solution

The fourth proportional to 13,140.12, 19,703.36 and 4,818 is: 7,224.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.12 : 19,703.36 = 4,818 : x
  2. Step 2: Convert to fraction form
    13,140.12/19,703.36 = 4,818/x
  3. Step 3: Cross multiply
    13,140.12x = 19,703.36 × 4,818
  4. Step 4: Simplify right side
    13,140.12x = 94,930,788.48
  5. Step 5: Solve for x
    x = 94,930,788.48/13,140.12
  6. Step 6: Final answer
    x = 7,224.50

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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.