Home / 15,230.21-21,017.54-8,424.23

Finding the Fourth Proportional to 15,230.21, 21,017.54 and 8,424.23

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Solution

The fourth proportional to 15,230.21, 21,017.54 and 8,424.23 is: 11,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,230.21 : 21,017.54 = 8,424.23 : x
  2. Step 2: Convert to fraction form
    15,230.21/21,017.54 = 8,424.23/x
  3. Step 3: Cross multiply
    15,230.21x = 21,017.54 × 8,424.23
  4. Step 4: Simplify right side
    15,230.21x = 177,056,590.99
  5. Step 5: Solve for x
    x = 177,056,590.99/15,230.21
  6. Step 6: Final answer
    x = 11,625.35

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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.