Home / 19,312.49-28,961.09-13,074.30

Finding the Fourth Proportional to 19,312.49, 28,961.09 and 13,074.30

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Solution

The fourth proportional to 19,312.49, 28,961.09 and 13,074.30 is: 19,606.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.49 : 28,961.09 = 13,074.30 : x
  2. Step 2: Convert to fraction form
    19,312.49/28,961.09 = 13,074.30/x
  3. Step 3: Cross multiply
    19,312.49x = 28,961.09 × 13,074.30
  4. Step 4: Simplify right side
    19,312.49x = 378,645,913.62
  5. Step 5: Solve for x
    x = 378,645,913.62/19,312.49
  6. Step 6: Final answer
    x = 19,606.28

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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.