Home / 28,458.95-39,272.72-15,711.37

Finding the Fourth Proportional to 28,458.95, 39,272.72 and 15,711.37

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Solution

The fourth proportional to 28,458.95, 39,272.72 and 15,711.37 is: 21,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.95 : 39,272.72 = 15,711.37 : x
  2. Step 2: Convert to fraction form
    28,458.95/39,272.72 = 15,711.37/x
  3. Step 3: Cross multiply
    28,458.95x = 39,272.72 × 15,711.37
  4. Step 4: Simplify right side
    28,458.95x = 617,028,058.09
  5. Step 5: Solve for x
    x = 617,028,058.09/28,458.95
  6. Step 6: Final answer
    x = 21,681.34

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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.