Home / 20,256.80-27,946.48-12,699.92

Finding the Fourth Proportional to 20,256.80, 27,946.48 and 12,699.92

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Solution

The fourth proportional to 20,256.80, 27,946.48 and 12,699.92 is: 17,520.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.80 : 27,946.48 = 12,699.92 : x
  2. Step 2: Convert to fraction form
    20,256.80/27,946.48 = 12,699.92/x
  3. Step 3: Cross multiply
    20,256.80x = 27,946.48 × 12,699.92
  4. Step 4: Simplify right side
    20,256.80x = 354,918,060.28
  5. Step 5: Solve for x
    x = 354,918,060.28/20,256.80
  6. Step 6: Final answer
    x = 17,520.93

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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.