Home / 15,235.80-21,025.26-8,521.35

Finding the Fourth Proportional to 15,235.80, 21,025.26 and 8,521.35

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Solution

The fourth proportional to 15,235.80, 21,025.26 and 8,521.35 is: 11,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.80 : 21,025.26 = 8,521.35 : x
  2. Step 2: Convert to fraction form
    15,235.80/21,025.26 = 8,521.35/x
  3. Step 3: Cross multiply
    15,235.80x = 21,025.26 × 8,521.35
  4. Step 4: Simplify right side
    15,235.80x = 179,163,599.30
  5. Step 5: Solve for x
    x = 179,163,599.30/15,235.80
  6. Step 6: Final answer
    x = 11,759.38

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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.