Home / 13,868.48-19,139.82-7,581.80

Finding the Fourth Proportional to 13,868.48, 19,139.82 and 7,581.80

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Solution

The fourth proportional to 13,868.48, 19,139.82 and 7,581.80 is: 10,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.48 : 19,139.82 = 7,581.80 : x
  2. Step 2: Convert to fraction form
    13,868.48/19,139.82 = 7,581.80/x
  3. Step 3: Cross multiply
    13,868.48x = 19,139.82 × 7,581.80
  4. Step 4: Simplify right side
    13,868.48x = 145,114,287.28
  5. Step 5: Solve for x
    x = 145,114,287.28/13,868.48
  6. Step 6: Final answer
    x = 10,463.60

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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.