Home / 20,312.46-28,048.94-12,771.77

Finding the Fourth Proportional to 20,312.46, 28,048.94 and 12,771.77

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Solution

The fourth proportional to 20,312.46, 28,048.94 and 12,771.77 is: 17,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.46 : 28,048.94 = 12,771.77 : x
  2. Step 2: Convert to fraction form
    20,312.46/28,048.94 = 12,771.77/x
  3. Step 3: Cross multiply
    20,312.46x = 28,048.94 × 12,771.77
  4. Step 4: Simplify right side
    20,312.46x = 358,234,406.32
  5. Step 5: Solve for x
    x = 358,234,406.32/20,312.46
  6. Step 6: Final answer
    x = 17,636.19

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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.