Home / 28,709.02-39,607.19-21,173.44

Finding the Fourth Proportional to 28,709.02, 39,607.19 and 21,173.44

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Solution

The fourth proportional to 28,709.02, 39,607.19 and 21,173.44 is: 29,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.02 : 39,607.19 = 21,173.44 : x
  2. Step 2: Convert to fraction form
    28,709.02/39,607.19 = 21,173.44/x
  3. Step 3: Cross multiply
    28,709.02x = 39,607.19 × 21,173.44
  4. Step 4: Simplify right side
    28,709.02x = 838,620,461.03
  5. Step 5: Solve for x
    x = 838,620,461.03/28,709.02
  6. Step 6: Final answer
    x = 29,211.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.