Home / 25,315.99-34,936.31-13,985.75

Finding the Fourth Proportional to 25,315.99, 34,936.31 and 13,985.75

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Solution

The fourth proportional to 25,315.99, 34,936.31 and 13,985.75 is: 19,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,315.99 : 34,936.31 = 13,985.75 : x
  2. Step 2: Convert to fraction form
    25,315.99/34,936.31 = 13,985.75/x
  3. Step 3: Cross multiply
    25,315.99x = 34,936.31 × 13,985.75
  4. Step 4: Simplify right side
    25,315.99x = 488,610,427.65
  5. Step 5: Solve for x
    x = 488,610,427.65/25,315.99
  6. Step 6: Final answer
    x = 19,300.47

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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.