Home / 28,189.54-38,901.60-15,614.26

Finding the Fourth Proportional to 28,189.54, 38,901.60 and 15,614.26

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Solution

The fourth proportional to 28,189.54, 38,901.60 and 15,614.26 is: 21,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.54 : 38,901.60 = 15,614.26 : x
  2. Step 2: Convert to fraction form
    28,189.54/38,901.60 = 15,614.26/x
  3. Step 3: Cross multiply
    28,189.54x = 38,901.60 × 15,614.26
  4. Step 4: Simplify right side
    28,189.54x = 607,419,696.82
  5. Step 5: Solve for x
    x = 607,419,696.82/28,189.54
  6. Step 6: Final answer
    x = 21,547.70

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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.