Home / 15,106.57-20,846.70-8,392.07

Finding the Fourth Proportional to 15,106.57, 20,846.70 and 8,392.07

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Solution

The fourth proportional to 15,106.57, 20,846.70 and 8,392.07 is: 11,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.57 : 20,846.70 = 8,392.07 : x
  2. Step 2: Convert to fraction form
    15,106.57/20,846.70 = 8,392.07/x
  3. Step 3: Cross multiply
    15,106.57x = 20,846.70 × 8,392.07
  4. Step 4: Simplify right side
    15,106.57x = 174,947,017.79
  5. Step 5: Solve for x
    x = 174,947,017.79/15,106.57
  6. Step 6: Final answer
    x = 11,580.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.