Home / 19,400.90-29,115.84-13,146.08

Finding the Fourth Proportional to 19,400.90, 29,115.84 and 13,146.08

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Solution

The fourth proportional to 19,400.90, 29,115.84 and 13,146.08 is: 19,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.90 : 29,115.84 = 13,146.08 : x
  2. Step 2: Convert to fraction form
    19,400.90/29,115.84 = 13,146.08/x
  3. Step 3: Cross multiply
    19,400.90x = 29,115.84 × 13,146.08
  4. Step 4: Simplify right side
    19,400.90x = 382,759,161.91
  5. Step 5: Solve for x
    x = 382,759,161.91/19,400.90
  6. Step 6: Final answer
    x = 19,728.94

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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.