Home / 21,423.80-32,114.10-9,745.40

Finding the Fourth Proportional to 21,423.80, 32,114.10 and 9,745.40

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Solution

The fourth proportional to 21,423.80, 32,114.10 and 9,745.40 is: 14,608.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.80 : 32,114.10 = 9,745.40 : x
  2. Step 2: Convert to fraction form
    21,423.80/32,114.10 = 9,745.40/x
  3. Step 3: Cross multiply
    21,423.80x = 32,114.10 × 9,745.40
  4. Step 4: Simplify right side
    21,423.80x = 312,964,750.14
  5. Step 5: Solve for x
    x = 312,964,750.14/21,423.80
  6. Step 6: Final answer
    x = 14,608.27

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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.