Home / 20,576.40-28,395.23-12,077.02

Finding the Fourth Proportional to 20,576.40, 28,395.23 and 12,077.02

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Solution

The fourth proportional to 20,576.40, 28,395.23 and 12,077.02 is: 16,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.40 : 28,395.23 = 12,077.02 : x
  2. Step 2: Convert to fraction form
    20,576.40/28,395.23 = 12,077.02/x
  3. Step 3: Cross multiply
    20,576.40x = 28,395.23 × 12,077.02
  4. Step 4: Simplify right side
    20,576.40x = 342,929,917.48
  5. Step 5: Solve for x
    x = 342,929,917.48/20,576.40
  6. Step 6: Final answer
    x = 16,666.17

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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.