Home / 13,962.74-19,231.14-12,911.72

Finding the Fourth Proportional to 13,962.74, 19,231.14 and 12,911.72

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Solution

The fourth proportional to 13,962.74, 19,231.14 and 12,911.72 is: 17,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,962.74 : 19,231.14 = 12,911.72 : x
  2. Step 2: Convert to fraction form
    13,962.74/19,231.14 = 12,911.72/x
  3. Step 3: Cross multiply
    13,962.74x = 19,231.14 × 12,911.72
  4. Step 4: Simplify right side
    13,962.74x = 248,307,094.96
  5. Step 5: Solve for x
    x = 248,307,094.96/13,962.74
  6. Step 6: Final answer
    x = 17,783.55

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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.