Home / 13,778.40-19,014.58-7,491.18

Finding the Fourth Proportional to 13,778.40, 19,014.58 and 7,491.18

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Solution

The fourth proportional to 13,778.40, 19,014.58 and 7,491.18 is: 10,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.40 : 19,014.58 = 7,491.18 : x
  2. Step 2: Convert to fraction form
    13,778.40/19,014.58 = 7,491.18/x
  3. Step 3: Cross multiply
    13,778.40x = 19,014.58 × 7,491.18
  4. Step 4: Simplify right side
    13,778.40x = 142,441,641.40
  5. Step 5: Solve for x
    x = 142,441,641.40/13,778.40
  6. Step 6: Final answer
    x = 10,338.04

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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.