Home / 14,774.40-20,384.46-8,485.56

Finding the Fourth Proportional to 14,774.40, 20,384.46 and 8,485.56

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Solution

The fourth proportional to 14,774.40, 20,384.46 and 8,485.56 is: 11,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,774.40 : 20,384.46 = 8,485.56 : x
  2. Step 2: Convert to fraction form
    14,774.40/20,384.46 = 8,485.56/x
  3. Step 3: Cross multiply
    14,774.40x = 20,384.46 × 8,485.56
  4. Step 4: Simplify right side
    14,774.40x = 172,973,558.40
  5. Step 5: Solve for x
    x = 172,973,558.40/14,774.40
  6. Step 6: Final answer
    x = 11,707.65

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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.