Home / 18,618.50-25,693.53-10,663.36

Finding the Fourth Proportional to 18,618.50, 25,693.53 and 10,663.36

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Solution

The fourth proportional to 18,618.50, 25,693.53 and 10,663.36 is: 14,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.50 : 25,693.53 = 10,663.36 : x
  2. Step 2: Convert to fraction form
    18,618.50/25,693.53 = 10,663.36/x
  3. Step 3: Cross multiply
    18,618.50x = 25,693.53 × 10,663.36
  4. Step 4: Simplify right side
    18,618.50x = 273,979,360.06
  5. Step 5: Solve for x
    x = 273,979,360.06/18,618.50
  6. Step 6: Final answer
    x = 14,715.44

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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.