Home / 19,860.13-27,408.45-12,307.94

Finding the Fourth Proportional to 19,860.13, 27,408.45 and 12,307.94

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Solution

The fourth proportional to 19,860.13, 27,408.45 and 12,307.94 is: 16,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.13 : 27,408.45 = 12,307.94 : x
  2. Step 2: Convert to fraction form
    19,860.13/27,408.45 = 12,307.94/x
  3. Step 3: Cross multiply
    19,860.13x = 27,408.45 × 12,307.94
  4. Step 4: Simplify right side
    19,860.13x = 337,341,558.09
  5. Step 5: Solve for x
    x = 337,341,558.09/19,860.13
  6. Step 6: Final answer
    x = 16,985.87

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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.