Home / 14,485.77-19,990.67-8,820.76

Finding the Fourth Proportional to 14,485.77, 19,990.67 and 8,820.76

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Solution

The fourth proportional to 14,485.77, 19,990.67 and 8,820.76 is: 12,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.77 : 19,990.67 = 8,820.76 : x
  2. Step 2: Convert to fraction form
    14,485.77/19,990.67 = 8,820.76/x
  3. Step 3: Cross multiply
    14,485.77x = 19,990.67 × 8,820.76
  4. Step 4: Simplify right side
    14,485.77x = 176,332,902.31
  5. Step 5: Solve for x
    x = 176,332,902.31/14,485.77
  6. Step 6: Final answer
    x = 12,172.84

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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.