Home / 28,509.48-39,333.44-18,450.63

Finding the Fourth Proportional to 28,509.48, 39,333.44 and 18,450.63

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Solution

The fourth proportional to 28,509.48, 39,333.44 and 18,450.63 is: 25,455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.48 : 39,333.44 = 18,450.63 : x
  2. Step 2: Convert to fraction form
    28,509.48/39,333.44 = 18,450.63/x
  3. Step 3: Cross multiply
    28,509.48x = 39,333.44 × 18,450.63
  4. Step 4: Simplify right side
    28,509.48x = 725,726,655.81
  5. Step 5: Solve for x
    x = 725,726,655.81/28,509.48
  6. Step 6: Final answer
    x = 25,455.63

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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.