Home / 12,745.84-19,130.28-5,355.76

Finding the Fourth Proportional to 12,745.84, 19,130.28 and 5,355.76

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Solution

The fourth proportional to 12,745.84, 19,130.28 and 5,355.76 is: 8,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.84 : 19,130.28 = 5,355.76 : x
  2. Step 2: Convert to fraction form
    12,745.84/19,130.28 = 5,355.76/x
  3. Step 3: Cross multiply
    12,745.84x = 19,130.28 × 5,355.76
  4. Step 4: Simplify right side
    12,745.84x = 102,457,188.41
  5. Step 5: Solve for x
    x = 102,457,188.41/12,745.84
  6. Step 6: Final answer
    x = 8,038.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.