Home / 18,933.48-26,128.20-10,980.30

Finding the Fourth Proportional to 18,933.48, 26,128.20 and 10,980.30

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Solution

The fourth proportional to 18,933.48, 26,128.20 and 10,980.30 is: 15,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.48 : 26,128.20 = 10,980.30 : x
  2. Step 2: Convert to fraction form
    18,933.48/26,128.20 = 10,980.30/x
  3. Step 3: Cross multiply
    18,933.48x = 26,128.20 × 10,980.30
  4. Step 4: Simplify right side
    18,933.48x = 286,895,474.46
  5. Step 5: Solve for x
    x = 286,895,474.46/18,933.48
  6. Step 6: Final answer
    x = 15,152.81

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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.