Home / 15,125.89-20,870.66-8,837.05

Finding the Fourth Proportional to 15,125.89, 20,870.66 and 8,837.05

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Solution

The fourth proportional to 15,125.89, 20,870.66 and 8,837.05 is: 12,193.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.89 : 20,870.66 = 8,837.05 : x
  2. Step 2: Convert to fraction form
    15,125.89/20,870.66 = 8,837.05/x
  3. Step 3: Cross multiply
    15,125.89x = 20,870.66 × 8,837.05
  4. Step 4: Simplify right side
    15,125.89x = 184,434,983.69
  5. Step 5: Solve for x
    x = 184,434,983.69/15,125.89
  6. Step 6: Final answer
    x = 12,193.34

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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.