Home / 30,964.38-42,705.99-20,350.14

Finding the Fourth Proportional to 30,964.38, 42,705.99 and 20,350.14

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Solution

The fourth proportional to 30,964.38, 42,705.99 and 20,350.14 is: 28,066.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.38 : 42,705.99 = 20,350.14 : x
  2. Step 2: Convert to fraction form
    30,964.38/42,705.99 = 20,350.14/x
  3. Step 3: Cross multiply
    30,964.38x = 42,705.99 × 20,350.14
  4. Step 4: Simplify right side
    30,964.38x = 869,072,875.34
  5. Step 5: Solve for x
    x = 869,072,875.34/30,964.38
  6. Step 6: Final answer
    x = 28,066.86

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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.