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Finding the Fourth Proportional to 13,803.01, 19,047.96 and 7,515.38

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Solution

The fourth proportional to 13,803.01, 19,047.96 and 7,515.38 is: 10,371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.01 : 19,047.96 = 7,515.38 : x
  2. Step 2: Convert to fraction form
    13,803.01/19,047.96 = 7,515.38/x
  3. Step 3: Cross multiply
    13,803.01x = 19,047.96 × 7,515.38
  4. Step 4: Simplify right side
    13,803.01x = 143,152,705.24
  5. Step 5: Solve for x
    x = 143,152,705.24/13,803.01
  6. Step 6: Final answer
    x = 10,371.12

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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.