Home / 28,459.81-42,705.24-19,107.64

Finding the Fourth Proportional to 28,459.81, 42,705.24 and 19,107.64

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Solution

The fourth proportional to 28,459.81, 42,705.24 and 19,107.64 is: 28,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.81 : 42,705.24 = 19,107.64 : x
  2. Step 2: Convert to fraction form
    28,459.81/42,705.24 = 19,107.64/x
  3. Step 3: Cross multiply
    28,459.81x = 42,705.24 × 19,107.64
  4. Step 4: Simplify right side
    28,459.81x = 815,996,352.03
  5. Step 5: Solve for x
    x = 815,996,352.03/28,459.81
  6. Step 6: Final answer
    x = 28,671.88

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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.