Home / 15,623.96-21,538.64-11,139.94

Finding the Fourth Proportional to 15,623.96, 21,538.64 and 11,139.94

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Solution

The fourth proportional to 15,623.96, 21,538.64 and 11,139.94 is: 15,357.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.96 : 21,538.64 = 11,139.94 : x
  2. Step 2: Convert to fraction form
    15,623.96/21,538.64 = 11,139.94/x
  3. Step 3: Cross multiply
    15,623.96x = 21,538.64 × 11,139.94
  4. Step 4: Simplify right side
    15,623.96x = 239,939,157.28
  5. Step 5: Solve for x
    x = 239,939,157.28/15,623.96
  6. Step 6: Final answer
    x = 15,357.13

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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.