Home / 13,336.20-20,004.30-12,688.20

Finding the Fourth Proportional to 13,336.20, 20,004.30 and 12,688.20

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Solution

The fourth proportional to 13,336.20, 20,004.30 and 12,688.20 is: 19,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,336.20 : 20,004.30 = 12,688.20 : x
  2. Step 2: Convert to fraction form
    13,336.20/20,004.30 = 12,688.20/x
  3. Step 3: Cross multiply
    13,336.20x = 20,004.30 × 12,688.20
  4. Step 4: Simplify right side
    13,336.20x = 253,818,559.26
  5. Step 5: Solve for x
    x = 253,818,559.26/13,336.20
  6. Step 6: Final answer
    x = 19,032.30

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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.