Home / 39,023.80-58,529.76-12,728.50

Finding the Fourth Proportional to 39,023.80, 58,529.76 and 12,728.50

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Solution

The fourth proportional to 39,023.80, 58,529.76 and 12,728.50 is: 19,090.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,023.80 : 58,529.76 = 12,728.50 : x
  2. Step 2: Convert to fraction form
    39,023.80/58,529.76 = 12,728.50/x
  3. Step 3: Cross multiply
    39,023.80x = 58,529.76 × 12,728.50
  4. Step 4: Simplify right side
    39,023.80x = 744,996,050.16
  5. Step 5: Solve for x
    x = 744,996,050.16/39,023.80
  6. Step 6: Final answer
    x = 19,090.81

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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.