Home / 15,178.55-20,942.84-9,210.08

Finding the Fourth Proportional to 15,178.55, 20,942.84 and 9,210.08

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Solution

The fourth proportional to 15,178.55, 20,942.84 and 9,210.08 is: 12,707.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.55 : 20,942.84 = 9,210.08 : x
  2. Step 2: Convert to fraction form
    15,178.55/20,942.84 = 9,210.08/x
  3. Step 3: Cross multiply
    15,178.55x = 20,942.84 × 9,210.08
  4. Step 4: Simplify right side
    15,178.55x = 192,885,185.78
  5. Step 5: Solve for x
    x = 192,885,185.78/15,178.55
  6. Step 6: Final answer
    x = 12,707.75

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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.