Home / 25,315.91-34,935.74-13,986.20

Finding the Fourth Proportional to 25,315.91, 34,935.74 and 13,986.20

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Solution

The fourth proportional to 25,315.91, 34,935.74 and 13,986.20 is: 19,300.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,315.91 : 34,935.74 = 13,986.20 : x
  2. Step 2: Convert to fraction form
    25,315.91/34,935.74 = 13,986.20/x
  3. Step 3: Cross multiply
    25,315.91x = 34,935.74 × 13,986.20
  4. Step 4: Simplify right side
    25,315.91x = 488,618,316.64
  5. Step 5: Solve for x
    x = 488,618,316.64/25,315.91
  6. Step 6: Final answer
    x = 19,300.84

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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.