Home / 15,180.96-20,941.76-12,351.50

Finding the Fourth Proportional to 15,180.96, 20,941.76 and 12,351.50

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Solution

The fourth proportional to 15,180.96, 20,941.76 and 12,351.50 is: 17,038.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.96 : 20,941.76 = 12,351.50 : x
  2. Step 2: Convert to fraction form
    15,180.96/20,941.76 = 12,351.50/x
  3. Step 3: Cross multiply
    15,180.96x = 20,941.76 × 12,351.50
  4. Step 4: Simplify right side
    15,180.96x = 258,662,074.81
  5. Step 5: Solve for x
    x = 258,662,074.81/15,180.96
  6. Step 6: Final answer
    x = 17,038.58

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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.