Home / 21,563.18-29,756.41-12,002.75

Finding the Fourth Proportional to 21,563.18, 29,756.41 and 12,002.75

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Solution

The fourth proportional to 21,563.18, 29,756.41 and 12,002.75 is: 16,563.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.18 : 29,756.41 = 12,002.75 : x
  2. Step 2: Convert to fraction form
    21,563.18/29,756.41 = 12,002.75/x
  3. Step 3: Cross multiply
    21,563.18x = 29,756.41 × 12,002.75
  4. Step 4: Simplify right side
    21,563.18x = 357,158,750.13
  5. Step 5: Solve for x
    x = 357,158,750.13/21,563.18
  6. Step 6: Final answer
    x = 16,563.36

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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.