Home / 28,461.39-39,278.03-15,716.37

Finding the Fourth Proportional to 28,461.39, 39,278.03 and 15,716.37

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Solution

The fourth proportional to 28,461.39, 39,278.03 and 15,716.37 is: 21,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.39 : 39,278.03 = 15,716.37 : x
  2. Step 2: Convert to fraction form
    28,461.39/39,278.03 = 15,716.37/x
  3. Step 3: Cross multiply
    28,461.39x = 39,278.03 × 15,716.37
  4. Step 4: Simplify right side
    28,461.39x = 617,307,777.38
  5. Step 5: Solve for x
    x = 617,307,777.38/28,461.39
  6. Step 6: Final answer
    x = 21,689.31

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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.