Home / 14,640.12-20,206.80-9,342.72

Finding the Fourth Proportional to 14,640.12, 20,206.80 and 9,342.72

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Solution

The fourth proportional to 14,640.12, 20,206.80 and 9,342.72 is: 12,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.12 : 20,206.80 = 9,342.72 : x
  2. Step 2: Convert to fraction form
    14,640.12/20,206.80 = 9,342.72/x
  3. Step 3: Cross multiply
    14,640.12x = 20,206.80 × 9,342.72
  4. Step 4: Simplify right side
    14,640.12x = 188,786,474.50
  5. Step 5: Solve for x
    x = 188,786,474.50/14,640.12
  6. Step 6: Final answer
    x = 12,895.15

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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.