Home / 12,087.70-18,136.95-4,302.10

Finding the Fourth Proportional to 12,087.70, 18,136.95 and 4,302.10

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Solution

The fourth proportional to 12,087.70, 18,136.95 and 4,302.10 is: 6,455.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.70 : 18,136.95 = 4,302.10 : x
  2. Step 2: Convert to fraction form
    12,087.70/18,136.95 = 4,302.10/x
  3. Step 3: Cross multiply
    12,087.70x = 18,136.95 × 4,302.10
  4. Step 4: Simplify right side
    12,087.70x = 78,026,972.60
  5. Step 5: Solve for x
    x = 78,026,972.60/12,087.70
  6. Step 6: Final answer
    x = 6,455.07

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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.