Home / 28,588.36-39,467.12-21,531.64

Finding the Fourth Proportional to 28,588.36, 39,467.12 and 21,531.64

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Solution

The fourth proportional to 28,588.36, 39,467.12 and 21,531.64 is: 29,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,588.36 : 39,467.12 = 21,531.64 : x
  2. Step 2: Convert to fraction form
    28,588.36/39,467.12 = 21,531.64/x
  3. Step 3: Cross multiply
    28,588.36x = 39,467.12 × 21,531.64
  4. Step 4: Simplify right side
    28,588.36x = 849,791,819.68
  5. Step 5: Solve for x
    x = 849,791,819.68/28,588.36
  6. Step 6: Final answer
    x = 29,725.10

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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.