Home / 28,300.64-39,054.78-15,554.66

Finding the Fourth Proportional to 28,300.64, 39,054.78 and 15,554.66

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Solution

The fourth proportional to 28,300.64, 39,054.78 and 15,554.66 is: 21,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.64 : 39,054.78 = 15,554.66 : x
  2. Step 2: Convert to fraction form
    28,300.64/39,054.78 = 15,554.66/x
  3. Step 3: Cross multiply
    28,300.64x = 39,054.78 × 15,554.66
  4. Step 4: Simplify right side
    28,300.64x = 607,483,824.27
  5. Step 5: Solve for x
    x = 607,483,824.27/28,300.64
  6. Step 6: Final answer
    x = 21,465.37

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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.