Home / 42,490.40-63,735.58-20,236.32

Finding the Fourth Proportional to 42,490.40, 63,735.58 and 20,236.32

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Solution

The fourth proportional to 42,490.40, 63,735.58 and 20,236.32 is: 30,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.40 : 63,735.58 = 20,236.32 : x
  2. Step 2: Convert to fraction form
    42,490.40/63,735.58 = 20,236.32/x
  3. Step 3: Cross multiply
    42,490.40x = 63,735.58 × 20,236.32
  4. Step 4: Simplify right side
    42,490.40x = 1,289,773,592.27
  5. Step 5: Solve for x
    x = 1,289,773,592.27/42,490.40
  6. Step 6: Final answer
    x = 30,354.47

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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.