Home / 15,511.05-21,401.51-10,485.45

Finding the Fourth Proportional to 15,511.05, 21,401.51 and 10,485.45

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Solution

The fourth proportional to 15,511.05, 21,401.51 and 10,485.45 is: 14,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.05 : 21,401.51 = 10,485.45 : x
  2. Step 2: Convert to fraction form
    15,511.05/21,401.51 = 10,485.45/x
  3. Step 3: Cross multiply
    15,511.05x = 21,401.51 × 10,485.45
  4. Step 4: Simplify right side
    15,511.05x = 224,404,410.60
  5. Step 5: Solve for x
    x = 224,404,410.60/15,511.05
  6. Step 6: Final answer
    x = 14,467.39

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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.