Home / 21,242.08-29,316.44-12,289.48

Finding the Fourth Proportional to 21,242.08, 29,316.44 and 12,289.48

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Solution

The fourth proportional to 21,242.08, 29,316.44 and 12,289.48 is: 16,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.08 : 29,316.44 = 12,289.48 : x
  2. Step 2: Convert to fraction form
    21,242.08/29,316.44 = 12,289.48/x
  3. Step 3: Cross multiply
    21,242.08x = 29,316.44 × 12,289.48
  4. Step 4: Simplify right side
    21,242.08x = 360,283,803.05
  5. Step 5: Solve for x
    x = 360,283,803.05/21,242.08
  6. Step 6: Final answer
    x = 16,960.85

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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.