Home / 20,370.40-28,111.44-12,412.96

Finding the Fourth Proportional to 20,370.40, 28,111.44 and 12,412.96

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Solution

The fourth proportional to 20,370.40, 28,111.44 and 12,412.96 is: 17,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.40 : 28,111.44 = 12,412.96 : x
  2. Step 2: Convert to fraction form
    20,370.40/28,111.44 = 12,412.96/x
  3. Step 3: Cross multiply
    20,370.40x = 28,111.44 × 12,412.96
  4. Step 4: Simplify right side
    20,370.40x = 348,946,180.26
  5. Step 5: Solve for x
    x = 348,946,180.26/20,370.40
  6. Step 6: Final answer
    x = 17,130.06

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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.