Home / 20,535.85-28,339.70-12,043.00

Finding the Fourth Proportional to 20,535.85, 28,339.70 and 12,043.00

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Solution

The fourth proportional to 20,535.85, 28,339.70 and 12,043.00 is: 16,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.85 : 28,339.70 = 12,043.00 : x
  2. Step 2: Convert to fraction form
    20,535.85/28,339.70 = 12,043.00/x
  3. Step 3: Cross multiply
    20,535.85x = 28,339.70 × 12,043.00
  4. Step 4: Simplify right side
    20,535.85x = 341,295,095.89
  5. Step 5: Solve for x
    x = 341,295,095.89/20,535.85
  6. Step 6: Final answer
    x = 16,619.47

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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.