Home / 28,657.40-42,977.79-9,936.68

Finding the Fourth Proportional to 28,657.40, 42,977.79 and 9,936.68

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Solution

The fourth proportional to 28,657.40, 42,977.79 and 9,936.68 is: 14,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.40 : 42,977.79 = 9,936.68 : x
  2. Step 2: Convert to fraction form
    28,657.40/42,977.79 = 9,936.68/x
  3. Step 3: Cross multiply
    28,657.40x = 42,977.79 × 9,936.68
  4. Step 4: Simplify right side
    28,657.40x = 427,056,331.45
  5. Step 5: Solve for x
    x = 427,056,331.45/28,657.40
  6. Step 6: Final answer
    x = 14,902.13

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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.