Home / 30,258.40-45,355.20-13,615.60

Finding the Fourth Proportional to 30,258.40, 45,355.20 and 13,615.60

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Solution

The fourth proportional to 30,258.40, 45,355.20 and 13,615.60 is: 20,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.40 : 45,355.20 = 13,615.60 : x
  2. Step 2: Convert to fraction form
    30,258.40/45,355.20 = 13,615.60/x
  3. Step 3: Cross multiply
    30,258.40x = 45,355.20 × 13,615.60
  4. Step 4: Simplify right side
    30,258.40x = 617,538,261.12
  5. Step 5: Solve for x
    x = 617,538,261.12/30,258.40
  6. Step 6: Final answer
    x = 20,408.82

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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.