Home / 12,600.32-18,905.12-5,205.40

Finding the Fourth Proportional to 12,600.32, 18,905.12 and 5,205.40

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Solution

The fourth proportional to 12,600.32, 18,905.12 and 5,205.40 is: 7,810.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,600.32 : 18,905.12 = 5,205.40 : x
  2. Step 2: Convert to fraction form
    12,600.32/18,905.12 = 5,205.40/x
  3. Step 3: Cross multiply
    12,600.32x = 18,905.12 × 5,205.40
  4. Step 4: Simplify right side
    12,600.32x = 98,408,711.65
  5. Step 5: Solve for x
    x = 98,408,711.65/12,600.32
  6. Step 6: Final answer
    x = 7,810.02

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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.