Home / 19,987.94-29,937.36-14,126.78

Finding the Fourth Proportional to 19,987.94, 29,937.36 and 14,126.78

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Solution

The fourth proportional to 19,987.94, 29,937.36 and 14,126.78 is: 21,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.94 : 29,937.36 = 14,126.78 : x
  2. Step 2: Convert to fraction form
    19,987.94/29,937.36 = 14,126.78/x
  3. Step 3: Cross multiply
    19,987.94x = 29,937.36 × 14,126.78
  4. Step 4: Simplify right side
    19,987.94x = 422,918,498.50
  5. Step 5: Solve for x
    x = 422,918,498.50/19,987.94
  6. Step 6: Final answer
    x = 21,158.68

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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.