Home / 14,205.90-21,290.85-5,429.10

Finding the Fourth Proportional to 14,205.90, 21,290.85 and 5,429.10

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Solution

The fourth proportional to 14,205.90, 21,290.85 and 5,429.10 is: 8,136.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,205.90 : 21,290.85 = 5,429.10 : x
  2. Step 2: Convert to fraction form
    14,205.90/21,290.85 = 5,429.10/x
  3. Step 3: Cross multiply
    14,205.90x = 21,290.85 × 5,429.10
  4. Step 4: Simplify right side
    14,205.90x = 115,590,153.74
  5. Step 5: Solve for x
    x = 115,590,153.74/14,205.90
  6. Step 6: Final answer
    x = 8,136.77

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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.