Home / 25,355.12-34,990.79-13,870.58

Finding the Fourth Proportional to 25,355.12, 34,990.79 and 13,870.58

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Solution

The fourth proportional to 25,355.12, 34,990.79 and 13,870.58 is: 19,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,355.12 : 34,990.79 = 13,870.58 : x
  2. Step 2: Convert to fraction form
    25,355.12/34,990.79 = 13,870.58/x
  3. Step 3: Cross multiply
    25,355.12x = 34,990.79 × 13,870.58
  4. Step 4: Simplify right side
    25,355.12x = 485,342,307.65
  5. Step 5: Solve for x
    x = 485,342,307.65/25,355.12
  6. Step 6: Final answer
    x = 19,141.79

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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.