Home / 28,932.85-39,918.47-18,857.63

Finding the Fourth Proportional to 28,932.85, 39,918.47 and 18,857.63

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Solution

The fourth proportional to 28,932.85, 39,918.47 and 18,857.63 is: 26,017.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.85 : 39,918.47 = 18,857.63 : x
  2. Step 2: Convert to fraction form
    28,932.85/39,918.47 = 18,857.63/x
  3. Step 3: Cross multiply
    28,932.85x = 39,918.47 × 18,857.63
  4. Step 4: Simplify right side
    28,932.85x = 752,767,643.14
  5. Step 5: Solve for x
    x = 752,767,643.14/28,932.85
  6. Step 6: Final answer
    x = 26,017.75

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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.