Home / 38,577.80-57,866.70-12,285.20

Finding the Fourth Proportional to 38,577.80, 57,866.70 and 12,285.20

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Solution

The fourth proportional to 38,577.80, 57,866.70 and 12,285.20 is: 18,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,577.80 : 57,866.70 = 12,285.20 : x
  2. Step 2: Convert to fraction form
    38,577.80/57,866.70 = 12,285.20/x
  3. Step 3: Cross multiply
    38,577.80x = 57,866.70 × 12,285.20
  4. Step 4: Simplify right side
    38,577.80x = 710,903,982.84
  5. Step 5: Solve for x
    x = 710,903,982.84/38,577.80
  6. Step 6: Final answer
    x = 18,427.80

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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.