Home / 13,423.90-20,133.45-8,484.70

Finding the Fourth Proportional to 13,423.90, 20,133.45 and 8,484.70

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Solution

The fourth proportional to 13,423.90, 20,133.45 and 8,484.70 is: 12,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.90 : 20,133.45 = 8,484.70 : x
  2. Step 2: Convert to fraction form
    13,423.90/20,133.45 = 8,484.70/x
  3. Step 3: Cross multiply
    13,423.90x = 20,133.45 × 8,484.70
  4. Step 4: Simplify right side
    13,423.90x = 170,826,283.22
  5. Step 5: Solve for x
    x = 170,826,283.22/13,423.90
  6. Step 6: Final answer
    x = 12,725.53

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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.