Home / 25,408.79-38,136.59-12,937.79

Finding the Fourth Proportional to 25,408.79, 38,136.59 and 12,937.79

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Solution

The fourth proportional to 25,408.79, 38,136.59 and 12,937.79 is: 19,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,408.79 : 38,136.59 = 12,937.79 : x
  2. Step 2: Convert to fraction form
    25,408.79/38,136.59 = 12,937.79/x
  3. Step 3: Cross multiply
    25,408.79x = 38,136.59 × 12,937.79
  4. Step 4: Simplify right side
    25,408.79x = 493,403,271.91
  5. Step 5: Solve for x
    x = 493,403,271.91/25,408.79
  6. Step 6: Final answer
    x = 19,418.61

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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.