Home / 42,492.40-63,738.58-20,238.32

Finding the Fourth Proportional to 42,492.40, 63,738.58 and 20,238.32

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Solution

The fourth proportional to 42,492.40, 63,738.58 and 20,238.32 is: 30,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,492.40 : 63,738.58 = 20,238.32 : x
  2. Step 2: Convert to fraction form
    42,492.40/63,738.58 = 20,238.32/x
  3. Step 3: Cross multiply
    42,492.40x = 63,738.58 × 20,238.32
  4. Step 4: Simplify right side
    42,492.40x = 1,289,961,778.39
  5. Step 5: Solve for x
    x = 1,289,961,778.39/42,492.40
  6. Step 6: Final answer
    x = 30,357.47

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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.