Home / 14,136.90-21,205.35-13,772.40

Finding the Fourth Proportional to 14,136.90, 21,205.35 and 13,772.40

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Solution

The fourth proportional to 14,136.90, 21,205.35 and 13,772.40 is: 20,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,136.90 : 21,205.35 = 13,772.40 : x
  2. Step 2: Convert to fraction form
    14,136.90/21,205.35 = 13,772.40/x
  3. Step 3: Cross multiply
    14,136.90x = 21,205.35 × 13,772.40
  4. Step 4: Simplify right side
    14,136.90x = 292,048,562.34
  5. Step 5: Solve for x
    x = 292,048,562.34/14,136.90
  6. Step 6: Final answer
    x = 20,658.60

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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.