Home / 28,274.56-39,018.32-15,528.08

Finding the Fourth Proportional to 28,274.56, 39,018.32 and 15,528.08

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Solution

The fourth proportional to 28,274.56, 39,018.32 and 15,528.08 is: 21,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.56 : 39,018.32 = 15,528.08 : x
  2. Step 2: Convert to fraction form
    28,274.56/39,018.32 = 15,528.08/x
  3. Step 3: Cross multiply
    28,274.56x = 39,018.32 × 15,528.08
  4. Step 4: Simplify right side
    28,274.56x = 605,879,594.43
  5. Step 5: Solve for x
    x = 605,879,594.43/28,274.56
  6. Step 6: Final answer
    x = 21,428.44

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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.