Home / 42,763.60-64,135.68-20,563.12

Finding the Fourth Proportional to 42,763.60, 64,135.68 and 20,563.12

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Solution

The fourth proportional to 42,763.60, 64,135.68 and 20,563.12 is: 30,840.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,763.60 : 64,135.68 = 20,563.12 : x
  2. Step 2: Convert to fraction form
    42,763.60/64,135.68 = 20,563.12/x
  3. Step 3: Cross multiply
    42,763.60x = 64,135.68 × 20,563.12
  4. Step 4: Simplify right side
    42,763.60x = 1,318,829,684.12
  5. Step 5: Solve for x
    x = 1,318,829,684.12/42,763.60
  6. Step 6: Final answer
    x = 30,840.01

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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.