Home / 21,495.28-32,242.87-12,131.05

Finding the Fourth Proportional to 21,495.28, 32,242.87 and 12,131.05

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Solution

The fourth proportional to 21,495.28, 32,242.87 and 12,131.05 is: 18,196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.28 : 32,242.87 = 12,131.05 : x
  2. Step 2: Convert to fraction form
    21,495.28/32,242.87 = 12,131.05/x
  3. Step 3: Cross multiply
    21,495.28x = 32,242.87 × 12,131.05
  4. Step 4: Simplify right side
    21,495.28x = 391,139,868.11
  5. Step 5: Solve for x
    x = 391,139,868.11/21,495.28
  6. Step 6: Final answer
    x = 18,196.55

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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.