Home / 13,905.54-20,863.62-8,362.80

Finding the Fourth Proportional to 13,905.54, 20,863.62 and 8,362.80

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Solution

The fourth proportional to 13,905.54, 20,863.62 and 8,362.80 is: 12,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.54 : 20,863.62 = 8,362.80 : x
  2. Step 2: Convert to fraction form
    13,905.54/20,863.62 = 8,362.80/x
  3. Step 3: Cross multiply
    13,905.54x = 20,863.62 × 8,362.80
  4. Step 4: Simplify right side
    13,905.54x = 174,478,281.34
  5. Step 5: Solve for x
    x = 174,478,281.34/13,905.54
  6. Step 6: Final answer
    x = 12,547.39

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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.