Home / 13,987.42-20,973.91-4,125.42

Finding the Fourth Proportional to 13,987.42, 20,973.91 and 4,125.42

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Solution

The fourth proportional to 13,987.42, 20,973.91 and 4,125.42 is: 6,186.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.42 : 20,973.91 = 4,125.42 : x
  2. Step 2: Convert to fraction form
    13,987.42/20,973.91 = 4,125.42/x
  3. Step 3: Cross multiply
    13,987.42x = 20,973.91 × 4,125.42
  4. Step 4: Simplify right side
    13,987.42x = 86,526,187.79
  5. Step 5: Solve for x
    x = 86,526,187.79/13,987.42
  6. Step 6: Final answer
    x = 6,186.00

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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.