Home / 19,136.79-26,408.75-10,638.68

Finding the Fourth Proportional to 19,136.79, 26,408.75 and 10,638.68

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Solution

The fourth proportional to 19,136.79, 26,408.75 and 10,638.68 is: 14,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.79 : 26,408.75 = 10,638.68 : x
  2. Step 2: Convert to fraction form
    19,136.79/26,408.75 = 10,638.68/x
  3. Step 3: Cross multiply
    19,136.79x = 26,408.75 × 10,638.68
  4. Step 4: Simplify right side
    19,136.79x = 280,954,055.21
  5. Step 5: Solve for x
    x = 280,954,055.21/19,136.79
  6. Step 6: Final answer
    x = 14,681.36

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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.