Home / 19,491.40-29,237.10-12,118.60

Finding the Fourth Proportional to 19,491.40, 29,237.10 and 12,118.60

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Solution

The fourth proportional to 19,491.40, 29,237.10 and 12,118.60 is: 18,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.40 : 29,237.10 = 12,118.60 : x
  2. Step 2: Convert to fraction form
    19,491.40/29,237.10 = 12,118.60/x
  3. Step 3: Cross multiply
    19,491.40x = 29,237.10 × 12,118.60
  4. Step 4: Simplify right side
    19,491.40x = 354,312,720.06
  5. Step 5: Solve for x
    x = 354,312,720.06/19,491.40
  6. Step 6: Final answer
    x = 18,177.90

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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.