Home / 13,728.40-20,588.34-5,830.84

Finding the Fourth Proportional to 13,728.40, 20,588.34 and 5,830.84

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Solution

The fourth proportional to 13,728.40, 20,588.34 and 5,830.84 is: 8,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.40 : 20,588.34 = 5,830.84 : x
  2. Step 2: Convert to fraction form
    13,728.40/20,588.34 = 5,830.84/x
  3. Step 3: Cross multiply
    13,728.40x = 20,588.34 × 5,830.84
  4. Step 4: Simplify right side
    13,728.40x = 120,047,316.41
  5. Step 5: Solve for x
    x = 120,047,316.41/13,728.40
  6. Step 6: Final answer
    x = 8,744.45

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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.