Home / 20,412.90-28,168.08-12,349.56

Finding the Fourth Proportional to 20,412.90, 28,168.08 and 12,349.56

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Solution

The fourth proportional to 20,412.90, 28,168.08 and 12,349.56 is: 17,041.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.90 : 28,168.08 = 12,349.56 : x
  2. Step 2: Convert to fraction form
    20,412.90/28,168.08 = 12,349.56/x
  3. Step 3: Cross multiply
    20,412.90x = 28,168.08 × 12,349.56
  4. Step 4: Simplify right side
    20,412.90x = 347,863,394.04
  5. Step 5: Solve for x
    x = 347,863,394.04/20,412.90
  6. Step 6: Final answer
    x = 17,041.35

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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.