Home / 14,688.69-20,270.40-7,974.30

Finding the Fourth Proportional to 14,688.69, 20,270.40 and 7,974.30

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Solution

The fourth proportional to 14,688.69, 20,270.40 and 7,974.30 is: 11,004.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.69 : 20,270.40 = 7,974.30 : x
  2. Step 2: Convert to fraction form
    14,688.69/20,270.40 = 7,974.30/x
  3. Step 3: Cross multiply
    14,688.69x = 20,270.40 × 7,974.30
  4. Step 4: Simplify right side
    14,688.69x = 161,642,250.72
  5. Step 5: Solve for x
    x = 161,642,250.72/14,688.69
  6. Step 6: Final answer
    x = 11,004.54

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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.