Home / 14,277.78-21,370.10-12,913.74

Finding the Fourth Proportional to 14,277.78, 21,370.10 and 12,913.74

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Solution

The fourth proportional to 14,277.78, 21,370.10 and 12,913.74 is: 19,328.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,277.78 : 21,370.10 = 12,913.74 : x
  2. Step 2: Convert to fraction form
    14,277.78/21,370.10 = 12,913.74/x
  3. Step 3: Cross multiply
    14,277.78x = 21,370.10 × 12,913.74
  4. Step 4: Simplify right side
    14,277.78x = 275,967,850.61
  5. Step 5: Solve for x
    x = 275,967,850.61/14,277.78
  6. Step 6: Final answer
    x = 19,328.48

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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.