Home / 14,855.80-20,501.40-9,191.56

Finding the Fourth Proportional to 14,855.80, 20,501.40 and 9,191.56

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Solution

The fourth proportional to 14,855.80, 20,501.40 and 9,191.56 is: 12,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.80 : 20,501.40 = 9,191.56 : x
  2. Step 2: Convert to fraction form
    14,855.80/20,501.40 = 9,191.56/x
  3. Step 3: Cross multiply
    14,855.80x = 20,501.40 × 9,191.56
  4. Step 4: Simplify right side
    14,855.80x = 188,439,848.18
  5. Step 5: Solve for x
    x = 188,439,848.18/14,855.80
  6. Step 6: Final answer
    x = 12,684.60

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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.