Home / 20,366.70-28,106.02-12,408.94

Finding the Fourth Proportional to 20,366.70, 28,106.02 and 12,408.94

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Solution

The fourth proportional to 20,366.70, 28,106.02 and 12,408.94 is: 17,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.70 : 28,106.02 = 12,408.94 : x
  2. Step 2: Convert to fraction form
    20,366.70/28,106.02 = 12,408.94/x
  3. Step 3: Cross multiply
    20,366.70x = 28,106.02 × 12,408.94
  4. Step 4: Simplify right side
    20,366.70x = 348,765,915.82
  5. Step 5: Solve for x
    x = 348,765,915.82/20,366.70
  6. Step 6: Final answer
    x = 17,124.32

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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.