Home / 13,615.80-20,385.30-12,233.40

Finding the Fourth Proportional to 13,615.80, 20,385.30 and 12,233.40

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Solution

The fourth proportional to 13,615.80, 20,385.30 and 12,233.40 is: 18,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.80 : 20,385.30 = 12,233.40 : x
  2. Step 2: Convert to fraction form
    13,615.80/20,385.30 = 12,233.40/x
  3. Step 3: Cross multiply
    13,615.80x = 20,385.30 × 12,233.40
  4. Step 4: Simplify right side
    13,615.80x = 249,381,529.02
  5. Step 5: Solve for x
    x = 249,381,529.02/13,615.80
  6. Step 6: Final answer
    x = 18,315.60

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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.