Home / 15,433.21-21,297.15-8,718.82

Finding the Fourth Proportional to 15,433.21, 21,297.15 and 8,718.82

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Solution

The fourth proportional to 15,433.21, 21,297.15 and 8,718.82 is: 12,031.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.21 : 21,297.15 = 8,718.82 : x
  2. Step 2: Convert to fraction form
    15,433.21/21,297.15 = 8,718.82/x
  3. Step 3: Cross multiply
    15,433.21x = 21,297.15 × 8,718.82
  4. Step 4: Simplify right side
    15,433.21x = 185,686,017.36
  5. Step 5: Solve for x
    x = 185,686,017.36/15,433.21
  6. Step 6: Final answer
    x = 12,031.59

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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.