Home / 13,421.43-20,135.52-9,480.42

Finding the Fourth Proportional to 13,421.43, 20,135.52 and 9,480.42

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Solution

The fourth proportional to 13,421.43, 20,135.52 and 9,480.42 is: 14,223.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.43 : 20,135.52 = 9,480.42 : x
  2. Step 2: Convert to fraction form
    13,421.43/20,135.52 = 9,480.42/x
  3. Step 3: Cross multiply
    13,421.43x = 20,135.52 × 9,480.42
  4. Step 4: Simplify right side
    13,421.43x = 190,893,186.52
  5. Step 5: Solve for x
    x = 190,893,186.52/13,421.43
  6. Step 6: Final answer
    x = 14,223.01

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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.