Home / 12,905.16-19,344.65-8,745.58

Finding the Fourth Proportional to 12,905.16, 19,344.65 and 8,745.58

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Solution

The fourth proportional to 12,905.16, 19,344.65 and 8,745.58 is: 13,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.16 : 19,344.65 = 8,745.58 : x
  2. Step 2: Convert to fraction form
    12,905.16/19,344.65 = 8,745.58/x
  3. Step 3: Cross multiply
    12,905.16x = 19,344.65 × 8,745.58
  4. Step 4: Simplify right side
    12,905.16x = 169,180,216.40
  5. Step 5: Solve for x
    x = 169,180,216.40/12,905.16
  6. Step 6: Final answer
    x = 13,109.50

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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.