Home / 25,145.45-34,701.30-13,815.65

Finding the Fourth Proportional to 25,145.45, 34,701.30 and 13,815.65

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Solution

The fourth proportional to 25,145.45, 34,701.30 and 13,815.65 is: 19,065.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,145.45 : 34,701.30 = 13,815.65 : x
  2. Step 2: Convert to fraction form
    25,145.45/34,701.30 = 13,815.65/x
  3. Step 3: Cross multiply
    25,145.45x = 34,701.30 × 13,815.65
  4. Step 4: Simplify right side
    25,145.45x = 479,421,102.10
  5. Step 5: Solve for x
    x = 479,421,102.10/25,145.45
  6. Step 6: Final answer
    x = 19,065.92

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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.