Home / 13,988.41-20,987.06-4,127.74

Finding the Fourth Proportional to 13,988.41, 20,987.06 and 4,127.74

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Solution

The fourth proportional to 13,988.41, 20,987.06 and 4,127.74 is: 6,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.41 : 20,987.06 = 4,127.74 : x
  2. Step 2: Convert to fraction form
    13,988.41/20,987.06 = 4,127.74/x
  3. Step 3: Cross multiply
    13,988.41x = 20,987.06 × 4,127.74
  4. Step 4: Simplify right side
    13,988.41x = 86,629,127.04
  5. Step 5: Solve for x
    x = 86,629,127.04/13,988.41
  6. Step 6: Final answer
    x = 6,192.92

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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.