Home / 25,828.65-38,767.23-12,690.45

Finding the Fourth Proportional to 25,828.65, 38,767.23 and 12,690.45

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Solution

The fourth proportional to 25,828.65, 38,767.23 and 12,690.45 is: 19,047.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,828.65 : 38,767.23 = 12,690.45 : x
  2. Step 2: Convert to fraction form
    25,828.65/38,767.23 = 12,690.45/x
  3. Step 3: Cross multiply
    25,828.65x = 38,767.23 × 12,690.45
  4. Step 4: Simplify right side
    25,828.65x = 491,973,593.95
  5. Step 5: Solve for x
    x = 491,973,593.95/25,828.65
  6. Step 6: Final answer
    x = 19,047.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.