Home / 13,491.90-20,205.45-6,558.30

Finding the Fourth Proportional to 13,491.90, 20,205.45 and 6,558.30

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Solution

The fourth proportional to 13,491.90, 20,205.45 and 6,558.30 is: 9,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.90 : 20,205.45 = 6,558.30 : x
  2. Step 2: Convert to fraction form
    13,491.90/20,205.45 = 6,558.30/x
  3. Step 3: Cross multiply
    13,491.90x = 20,205.45 × 6,558.30
  4. Step 4: Simplify right side
    13,491.90x = 132,513,402.74
  5. Step 5: Solve for x
    x = 132,513,402.74/13,491.90
  6. Step 6: Final answer
    x = 9,821.70

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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.