Home / 39,189.57-58,771.94-12,888.20

Finding the Fourth Proportional to 39,189.57, 58,771.94 and 12,888.20

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Solution

The fourth proportional to 39,189.57, 58,771.94 and 12,888.20 is: 19,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.57 : 58,771.94 = 12,888.20 : x
  2. Step 2: Convert to fraction form
    39,189.57/58,771.94 = 12,888.20/x
  3. Step 3: Cross multiply
    39,189.57x = 58,771.94 × 12,888.20
  4. Step 4: Simplify right side
    39,189.57x = 757,464,158.81
  5. Step 5: Solve for x
    x = 757,464,158.81/39,189.57
  6. Step 6: Final answer
    x = 19,328.21

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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.