Home / 28,637.63-39,537.21-18,718.91

Finding the Fourth Proportional to 28,637.63, 39,537.21 and 18,718.91

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Solution

The fourth proportional to 28,637.63, 39,537.21 and 18,718.91 is: 25,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.63 : 39,537.21 = 18,718.91 : x
  2. Step 2: Convert to fraction form
    28,637.63/39,537.21 = 18,718.91/x
  3. Step 3: Cross multiply
    28,637.63x = 39,537.21 × 18,718.91
  4. Step 4: Simplify right side
    28,637.63x = 740,093,475.64
  5. Step 5: Solve for x
    x = 740,093,475.64/28,637.63
  6. Step 6: Final answer
    x = 25,843.39

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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.