Home / 10,518.05-15,779.51-3,122.35

Finding the Fourth Proportional to 10,518.05, 15,779.51 and 3,122.35

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Solution

The fourth proportional to 10,518.05, 15,779.51 and 3,122.35 is: 4,684.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.05 : 15,779.51 = 3,122.35 : x
  2. Step 2: Convert to fraction form
    10,518.05/15,779.51 = 3,122.35/x
  3. Step 3: Cross multiply
    10,518.05x = 15,779.51 × 3,122.35
  4. Step 4: Simplify right side
    10,518.05x = 49,269,109.70
  5. Step 5: Solve for x
    x = 49,269,109.70/10,518.05
  6. Step 6: Final answer
    x = 4,684.24

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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.