Home / 21,267.53-29,347.46-12,315.60

Finding the Fourth Proportional to 21,267.53, 29,347.46 and 12,315.60

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Solution

The fourth proportional to 21,267.53, 29,347.46 and 12,315.60 is: 16,994.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.53 : 29,347.46 = 12,315.60 : x
  2. Step 2: Convert to fraction form
    21,267.53/29,347.46 = 12,315.60/x
  3. Step 3: Cross multiply
    21,267.53x = 29,347.46 × 12,315.60
  4. Step 4: Simplify right side
    21,267.53x = 361,431,516.80
  5. Step 5: Solve for x
    x = 361,431,516.80/21,267.53
  6. Step 6: Final answer
    x = 16,994.53

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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.