Home / 20,835.97-28,746.50-11,877.00

Finding the Fourth Proportional to 20,835.97, 28,746.50 and 11,877.00

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Solution

The fourth proportional to 20,835.97, 28,746.50 and 11,877.00 is: 16,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.97 : 28,746.50 = 11,877.00 : x
  2. Step 2: Convert to fraction form
    20,835.97/28,746.50 = 11,877.00/x
  3. Step 3: Cross multiply
    20,835.97x = 28,746.50 × 11,877.00
  4. Step 4: Simplify right side
    20,835.97x = 341,422,013.32
  5. Step 5: Solve for x
    x = 341,422,013.32/20,835.97
  6. Step 6: Final answer
    x = 16,386.18

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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.