Home / 25,788.80-38,689.31-9,994.21

Finding the Fourth Proportional to 25,788.80, 38,689.31 and 9,994.21

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Solution

The fourth proportional to 25,788.80, 38,689.31 and 9,994.21 is: 14,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,788.80 : 38,689.31 = 9,994.21 : x
  2. Step 2: Convert to fraction form
    25,788.80/38,689.31 = 9,994.21/x
  3. Step 3: Cross multiply
    25,788.80x = 38,689.31 × 9,994.21
  4. Step 4: Simplify right side
    25,788.80x = 386,669,017.16
  5. Step 5: Solve for x
    x = 386,669,017.16/25,788.80
  6. Step 6: Final answer
    x = 14,993.68

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1.5x scale

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.