Home / 13,795.98-19,038.40-7,828.80

Finding the Fourth Proportional to 13,795.98, 19,038.40 and 7,828.80

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Solution

The fourth proportional to 13,795.98, 19,038.40 and 7,828.80 is: 10,803.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,795.98 : 19,038.40 = 7,828.80 : x
  2. Step 2: Convert to fraction form
    13,795.98/19,038.40 = 7,828.80/x
  3. Step 3: Cross multiply
    13,795.98x = 19,038.40 × 7,828.80
  4. Step 4: Simplify right side
    13,795.98x = 149,047,825.92
  5. Step 5: Solve for x
    x = 149,047,825.92/13,795.98
  6. Step 6: Final answer
    x = 10,803.71

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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.