Home / 39,630.80-59,446.20-20,903.60

Finding the Fourth Proportional to 39,630.80, 59,446.20 and 20,903.60

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Solution

The fourth proportional to 39,630.80, 59,446.20 and 20,903.60 is: 31,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.80 : 59,446.20 = 20,903.60 : x
  2. Step 2: Convert to fraction form
    39,630.80/59,446.20 = 20,903.60/x
  3. Step 3: Cross multiply
    39,630.80x = 59,446.20 × 20,903.60
  4. Step 4: Simplify right side
    39,630.80x = 1,242,639,586.32
  5. Step 5: Solve for x
    x = 1,242,639,586.32/39,630.80
  6. Step 6: Final answer
    x = 31,355.40

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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.