Home / 28,017.09-38,663.08-15,270.39

Finding the Fourth Proportional to 28,017.09, 38,663.08 and 15,270.39

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Solution

The fourth proportional to 28,017.09, 38,663.08 and 15,270.39 is: 21,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.09 : 38,663.08 = 15,270.39 : x
  2. Step 2: Convert to fraction form
    28,017.09/38,663.08 = 15,270.39/x
  3. Step 3: Cross multiply
    28,017.09x = 38,663.08 × 15,270.39
  4. Step 4: Simplify right side
    28,017.09x = 590,400,310.20
  5. Step 5: Solve for x
    x = 590,400,310.20/28,017.09
  6. Step 6: Final answer
    x = 21,072.86

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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.