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Finding the Fourth Proportional to 14,903.40, 20,916.60 and 14,903.40

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Solution

The fourth proportional to 14,903.40, 20,916.60 and 14,903.40 is: 20,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,903.40 : 20,916.60 = 14,903.40 : x
  2. Step 2: Convert to fraction form
    14,903.40/20,916.60 = 14,903.40/x
  3. Step 3: Cross multiply
    14,903.40x = 20,916.60 × 14,903.40
  4. Step 4: Simplify right side
    14,903.40x = 311,728,456.44
  5. Step 5: Solve for x
    x = 311,728,456.44/14,903.40
  6. Step 6: Final answer
    x = 20,916.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.