Home / 20,966.45-28,918.58-12,010.68

Finding the Fourth Proportional to 20,966.45, 28,918.58 and 12,010.68

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Solution

The fourth proportional to 20,966.45, 28,918.58 and 12,010.68 is: 16,566.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.45 : 28,918.58 = 12,010.68 : x
  2. Step 2: Convert to fraction form
    20,966.45/28,918.58 = 12,010.68/x
  3. Step 3: Cross multiply
    20,966.45x = 28,918.58 × 12,010.68
  4. Step 4: Simplify right side
    20,966.45x = 347,331,810.43
  5. Step 5: Solve for x
    x = 347,331,810.43/20,966.45
  6. Step 6: Final answer
    x = 16,566.08

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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.