Home / 13,423.32-20,122.56-8,145.36

Finding the Fourth Proportional to 13,423.32, 20,122.56 and 8,145.36

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Solution

The fourth proportional to 13,423.32, 20,122.56 and 8,145.36 is: 12,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.32 : 20,122.56 = 8,145.36 : x
  2. Step 2: Convert to fraction form
    13,423.32/20,122.56 = 8,145.36/x
  3. Step 3: Cross multiply
    13,423.32x = 20,122.56 × 8,145.36
  4. Step 4: Simplify right side
    13,423.32x = 163,905,495.32
  5. Step 5: Solve for x
    x = 163,905,495.32/13,423.32
  6. Step 6: Final answer
    x = 12,210.50

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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.