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Finding the Fourth Proportional to 28,595.80, 42,893.70 and 23,638.60

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Solution

The fourth proportional to 28,595.80, 42,893.70 and 23,638.60 is: 35,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.80 : 42,893.70 = 23,638.60 : x
  2. Step 2: Convert to fraction form
    28,595.80/42,893.70 = 23,638.60/x
  3. Step 3: Cross multiply
    28,595.80x = 42,893.70 × 23,638.60
  4. Step 4: Simplify right side
    28,595.80x = 1,013,947,016.82
  5. Step 5: Solve for x
    x = 1,013,947,016.82/28,595.80
  6. Step 6: Final answer
    x = 35,457.90

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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.