Home / 28,072.98-38,740.59-15,497.64

Finding the Fourth Proportional to 28,072.98, 38,740.59 and 15,497.64

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Solution

The fourth proportional to 28,072.98, 38,740.59 and 15,497.64 is: 21,386.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.98 : 38,740.59 = 15,497.64 : x
  2. Step 2: Convert to fraction form
    28,072.98/38,740.59 = 15,497.64/x
  3. Step 3: Cross multiply
    28,072.98x = 38,740.59 × 15,497.64
  4. Step 4: Simplify right side
    28,072.98x = 600,387,717.21
  5. Step 5: Solve for x
    x = 600,387,717.21/28,072.98
  6. Step 6: Final answer
    x = 21,386.68

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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.