Home / 28,384.36-39,179.50-18,313.08

Finding the Fourth Proportional to 28,384.36, 39,179.50 and 18,313.08

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Solution

The fourth proportional to 28,384.36, 39,179.50 and 18,313.08 is: 25,277.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.36 : 39,179.50 = 18,313.08 : x
  2. Step 2: Convert to fraction form
    28,384.36/39,179.50 = 18,313.08/x
  3. Step 3: Cross multiply
    28,384.36x = 39,179.50 × 18,313.08
  4. Step 4: Simplify right side
    28,384.36x = 717,497,317.86
  5. Step 5: Solve for x
    x = 717,497,317.86/28,384.36
  6. Step 6: Final answer
    x = 25,277.91

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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.