Home / 15,315.03-21,140.10-9,027

Finding the Fourth Proportional to 15,315.03, 21,140.10 and 9,027

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Solution

The fourth proportional to 15,315.03, 21,140.10 and 9,027 is: 12,460.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.03 : 21,140.10 = 9,027 : x
  2. Step 2: Convert to fraction form
    15,315.03/21,140.10 = 9,027/x
  3. Step 3: Cross multiply
    15,315.03x = 21,140.10 × 9,027
  4. Step 4: Simplify right side
    15,315.03x = 190,831,682.70
  5. Step 5: Solve for x
    x = 190,831,682.70/15,315.03
  6. Step 6: Final answer
    x = 12,460.42

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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.