Home / 14,262.75-21,375.36-12,405.15

Finding the Fourth Proportional to 14,262.75, 21,375.36 and 12,405.15

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Solution

The fourth proportional to 14,262.75, 21,375.36 and 12,405.15 is: 18,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,262.75 : 21,375.36 = 12,405.15 : x
  2. Step 2: Convert to fraction form
    14,262.75/21,375.36 = 12,405.15/x
  3. Step 3: Cross multiply
    14,262.75x = 21,375.36 × 12,405.15
  4. Step 4: Simplify right side
    14,262.75x = 265,164,547.10
  5. Step 5: Solve for x
    x = 265,164,547.10/14,262.75
  6. Step 6: Final answer
    x = 18,591.40

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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.