Home / 28,136.88-42,211.02-12,554.50

Finding the Fourth Proportional to 28,136.88, 42,211.02 and 12,554.50

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Solution

The fourth proportional to 28,136.88, 42,211.02 and 12,554.50 is: 18,834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.88 : 42,211.02 = 12,554.50 : x
  2. Step 2: Convert to fraction form
    28,136.88/42,211.02 = 12,554.50/x
  3. Step 3: Cross multiply
    28,136.88x = 42,211.02 × 12,554.50
  4. Step 4: Simplify right side
    28,136.88x = 529,938,250.59
  5. Step 5: Solve for x
    x = 529,938,250.59/28,136.88
  6. Step 6: Final answer
    x = 18,834.29

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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.