Home / 21,830.72-32,718.66-9,336.05

Finding the Fourth Proportional to 21,830.72, 32,718.66 and 9,336.05

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Solution

The fourth proportional to 21,830.72, 32,718.66 and 9,336.05 is: 13,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.72 : 32,718.66 = 9,336.05 : x
  2. Step 2: Convert to fraction form
    21,830.72/32,718.66 = 9,336.05/x
  3. Step 3: Cross multiply
    21,830.72x = 32,718.66 × 9,336.05
  4. Step 4: Simplify right side
    21,830.72x = 305,462,882.10
  5. Step 5: Solve for x
    x = 305,462,882.10/21,830.72
  6. Step 6: Final answer
    x = 13,992.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.