Home / 20,980.07-28,943.39-12,025.52

Finding the Fourth Proportional to 20,980.07, 28,943.39 and 12,025.52

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Solution

The fourth proportional to 20,980.07, 28,943.39 and 12,025.52 is: 16,590.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.07 : 28,943.39 = 12,025.52 : x
  2. Step 2: Convert to fraction form
    20,980.07/28,943.39 = 12,025.52/x
  3. Step 3: Cross multiply
    20,980.07x = 28,943.39 × 12,025.52
  4. Step 4: Simplify right side
    20,980.07x = 348,059,315.31
  5. Step 5: Solve for x
    x = 348,059,315.31/20,980.07
  6. Step 6: Final answer
    x = 16,590.00

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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.