Home / 28,239.57-42,358.07-12,440.37

Finding the Fourth Proportional to 28,239.57, 42,358.07 and 12,440.37

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Solution

The fourth proportional to 28,239.57, 42,358.07 and 12,440.37 is: 18,660.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.57 : 42,358.07 = 12,440.37 : x
  2. Step 2: Convert to fraction form
    28,239.57/42,358.07 = 12,440.37/x
  3. Step 3: Cross multiply
    28,239.57x = 42,358.07 × 12,440.37
  4. Step 4: Simplify right side
    28,239.57x = 526,950,253.23
  5. Step 5: Solve for x
    x = 526,950,253.23/28,239.57
  6. Step 6: Final answer
    x = 18,660.00

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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.