Home / 19,392.18-26,751.75-12,678.09

Finding the Fourth Proportional to 19,392.18, 26,751.75 and 12,678.09

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Solution

The fourth proportional to 19,392.18, 26,751.75 and 12,678.09 is: 17,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,392.18 : 26,751.75 = 12,678.09 : x
  2. Step 2: Convert to fraction form
    19,392.18/26,751.75 = 12,678.09/x
  3. Step 3: Cross multiply
    19,392.18x = 26,751.75 × 12,678.09
  4. Step 4: Simplify right side
    19,392.18x = 339,161,094.16
  5. Step 5: Solve for x
    x = 339,161,094.16/19,392.18
  6. Step 6: Final answer
    x = 17,489.58

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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.