Home / 28,397.09-39,186.59-16,464.31

Finding the Fourth Proportional to 28,397.09, 39,186.59 and 16,464.31

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Solution

The fourth proportional to 28,397.09, 39,186.59 and 16,464.31 is: 22,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.09 : 39,186.59 = 16,464.31 : x
  2. Step 2: Convert to fraction form
    28,397.09/39,186.59 = 16,464.31/x
  3. Step 3: Cross multiply
    28,397.09x = 39,186.59 × 16,464.31
  4. Step 4: Simplify right side
    28,397.09x = 645,179,985.31
  5. Step 5: Solve for x
    x = 645,179,985.31/28,397.09
  6. Step 6: Final answer
    x = 22,719.93

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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.