Home / 13,535.79-20,309.75-8,604.15

Finding the Fourth Proportional to 13,535.79, 20,309.75 and 8,604.15

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Solution

The fourth proportional to 13,535.79, 20,309.75 and 8,604.15 is: 12,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,535.79 : 20,309.75 = 8,604.15 : x
  2. Step 2: Convert to fraction form
    13,535.79/20,309.75 = 8,604.15/x
  3. Step 3: Cross multiply
    13,535.79x = 20,309.75 × 8,604.15
  4. Step 4: Simplify right side
    13,535.79x = 174,748,135.46
  5. Step 5: Solve for x
    x = 174,748,135.46/13,535.79
  6. Step 6: Final answer
    x = 12,910.08

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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.