Home / 15,222.08-21,007.45-8,507.99

Finding the Fourth Proportional to 15,222.08, 21,007.45 and 8,507.99

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Solution

The fourth proportional to 15,222.08, 21,007.45 and 8,507.99 is: 11,741.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.08 : 21,007.45 = 8,507.99 : x
  2. Step 2: Convert to fraction form
    15,222.08/21,007.45 = 8,507.99/x
  3. Step 3: Cross multiply
    15,222.08x = 21,007.45 × 8,507.99
  4. Step 4: Simplify right side
    15,222.08x = 178,731,119.51
  5. Step 5: Solve for x
    x = 178,731,119.51/15,222.08
  6. Step 6: Final answer
    x = 11,741.57

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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.