Home / 12,997.53-19,495.08-3,638.40

Finding the Fourth Proportional to 12,997.53, 19,495.08 and 3,638.40

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Solution

The fourth proportional to 12,997.53, 19,495.08 and 3,638.40 is: 5,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.53 : 19,495.08 = 3,638.40 : x
  2. Step 2: Convert to fraction form
    12,997.53/19,495.08 = 3,638.40/x
  3. Step 3: Cross multiply
    12,997.53x = 19,495.08 × 3,638.40
  4. Step 4: Simplify right side
    12,997.53x = 70,930,899.07
  5. Step 5: Solve for x
    x = 70,930,899.07/12,997.53
  6. Step 6: Final answer
    x = 5,457.26

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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.