Home / 15,112.80-20,852.51-8,825.18

Finding the Fourth Proportional to 15,112.80, 20,852.51 and 8,825.18

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Solution

The fourth proportional to 15,112.80, 20,852.51 and 8,825.18 is: 12,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.80 : 20,852.51 = 8,825.18 : x
  2. Step 2: Convert to fraction form
    15,112.80/20,852.51 = 8,825.18/x
  3. Step 3: Cross multiply
    15,112.80x = 20,852.51 × 8,825.18
  4. Step 4: Simplify right side
    15,112.80x = 184,027,005.81
  5. Step 5: Solve for x
    x = 184,027,005.81/15,112.80
  6. Step 6: Final answer
    x = 12,176.90

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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.