Home / 20,461.18-28,236.72-12,077.68

Finding the Fourth Proportional to 20,461.18, 28,236.72 and 12,077.68

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Solution

The fourth proportional to 20,461.18, 28,236.72 and 12,077.68 is: 16,667.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.18 : 28,236.72 = 12,077.68 : x
  2. Step 2: Convert to fraction form
    20,461.18/28,236.72 = 12,077.68/x
  3. Step 3: Cross multiply
    20,461.18x = 28,236.72 × 12,077.68
  4. Step 4: Simplify right side
    20,461.18x = 341,034,068.41
  5. Step 5: Solve for x
    x = 341,034,068.41/20,461.18
  6. Step 6: Final answer
    x = 16,667.37

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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.