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Finding the Fourth Proportional to 15,130.18, 20,879.94 and 8,846.20

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Solution

The fourth proportional to 15,130.18, 20,879.94 and 8,846.20 is: 12,207.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.18 : 20,879.94 = 8,846.20 : x
  2. Step 2: Convert to fraction form
    15,130.18/20,879.94 = 8,846.20/x
  3. Step 3: Cross multiply
    15,130.18x = 20,879.94 × 8,846.20
  4. Step 4: Simplify right side
    15,130.18x = 184,708,125.23
  5. Step 5: Solve for x
    x = 184,708,125.23/15,130.18
  6. Step 6: Final answer
    x = 12,207.93

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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.