Home / 21,191.10-29,235.65-12,235.34

Finding the Fourth Proportional to 21,191.10, 29,235.65 and 12,235.34

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Solution

The fourth proportional to 21,191.10, 29,235.65 and 12,235.34 is: 16,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.10 : 29,235.65 = 12,235.34 : x
  2. Step 2: Convert to fraction form
    21,191.10/29,235.65 = 12,235.34/x
  3. Step 3: Cross multiply
    21,191.10x = 29,235.65 × 12,235.34
  4. Step 4: Simplify right side
    21,191.10x = 357,707,910.52
  5. Step 5: Solve for x
    x = 357,707,910.52/21,191.10
  6. Step 6: Final answer
    x = 16,880.10

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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.