Home / 15,077.55-20,783.04-11,885.67

Finding the Fourth Proportional to 15,077.55, 20,783.04 and 11,885.67

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Solution

The fourth proportional to 15,077.55, 20,783.04 and 11,885.67 is: 16,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.55 : 20,783.04 = 11,885.67 : x
  2. Step 2: Convert to fraction form
    15,077.55/20,783.04 = 11,885.67/x
  3. Step 3: Cross multiply
    15,077.55x = 20,783.04 × 11,885.67
  4. Step 4: Simplify right side
    15,077.55x = 247,020,355.04
  5. Step 5: Solve for x
    x = 247,020,355.04/15,077.55
  6. Step 6: Final answer
    x = 16,383.32

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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.