Home / 19,673.12-27,148.88-10,720.80

Finding the Fourth Proportional to 19,673.12, 27,148.88 and 10,720.80

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Solution

The fourth proportional to 19,673.12, 27,148.88 and 10,720.80 is: 14,794.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,673.12 : 27,148.88 = 10,720.80 : x
  2. Step 2: Convert to fraction form
    19,673.12/27,148.88 = 10,720.80/x
  3. Step 3: Cross multiply
    19,673.12x = 27,148.88 × 10,720.80
  4. Step 4: Simplify right side
    19,673.12x = 291,057,712.70
  5. Step 5: Solve for x
    x = 291,057,712.70/19,673.12
  6. Step 6: Final answer
    x = 14,794.69

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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.