Home / 13,795.20-19,038.61-7,828.74

Finding the Fourth Proportional to 13,795.20, 19,038.61 and 7,828.74

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Solution

The fourth proportional to 13,795.20, 19,038.61 and 7,828.74 is: 10,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,795.20 : 19,038.61 = 7,828.74 : x
  2. Step 2: Convert to fraction form
    13,795.20/19,038.61 = 7,828.74/x
  3. Step 3: Cross multiply
    13,795.20x = 19,038.61 × 7,828.74
  4. Step 4: Simplify right side
    13,795.20x = 149,048,327.65
  5. Step 5: Solve for x
    x = 149,048,327.65/13,795.20
  6. Step 6: Final answer
    x = 10,804.36

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1.5x scale

Why These Related Problems?

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