Home / 12,623.28-18,923.88-5,223.12

Finding the Fourth Proportional to 12,623.28, 18,923.88 and 5,223.12

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Solution

The fourth proportional to 12,623.28, 18,923.88 and 5,223.12 is: 7,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.28 : 18,923.88 = 5,223.12 : x
  2. Step 2: Convert to fraction form
    12,623.28/18,923.88 = 5,223.12/x
  3. Step 3: Cross multiply
    12,623.28x = 18,923.88 × 5,223.12
  4. Step 4: Simplify right side
    12,623.28x = 98,841,696.11
  5. Step 5: Solve for x
    x = 98,841,696.11/12,623.28
  6. Step 6: Final answer
    x = 7,830.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.