Home / 13,597.20-20,420.10-9,903.60

Finding the Fourth Proportional to 13,597.20, 20,420.10 and 9,903.60

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Solution

The fourth proportional to 13,597.20, 20,420.10 and 9,903.60 is: 14,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,597.20 : 20,420.10 = 9,903.60 : x
  2. Step 2: Convert to fraction form
    13,597.20/20,420.10 = 9,903.60/x
  3. Step 3: Cross multiply
    13,597.20x = 20,420.10 × 9,903.60
  4. Step 4: Simplify right side
    13,597.20x = 202,232,502.36
  5. Step 5: Solve for x
    x = 202,232,502.36/13,597.20
  6. Step 6: Final answer
    x = 14,873.10

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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.