Home / 19,809.78-29,751.69-17,438.71

Finding the Fourth Proportional to 19,809.78, 29,751.69 and 17,438.71

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Solution

The fourth proportional to 19,809.78, 29,751.69 and 17,438.71 is: 26,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.78 : 29,751.69 = 17,438.71 : x
  2. Step 2: Convert to fraction form
    19,809.78/29,751.69 = 17,438.71/x
  3. Step 3: Cross multiply
    19,809.78x = 29,751.69 × 17,438.71
  4. Step 4: Simplify right side
    19,809.78x = 518,830,857.97
  5. Step 5: Solve for x
    x = 518,830,857.97/19,809.78
  6. Step 6: Final answer
    x = 26,190.64

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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.