Home / 15,057.32-20,780.64-8,684.16

Finding the Fourth Proportional to 15,057.32, 20,780.64 and 8,684.16

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Solution

The fourth proportional to 15,057.32, 20,780.64 and 8,684.16 is: 11,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.32 : 20,780.64 = 8,684.16 : x
  2. Step 2: Convert to fraction form
    15,057.32/20,780.64 = 8,684.16/x
  3. Step 3: Cross multiply
    15,057.32x = 20,780.64 × 8,684.16
  4. Step 4: Simplify right side
    15,057.32x = 180,462,402.66
  5. Step 5: Solve for x
    x = 180,462,402.66/15,057.32
  6. Step 6: Final answer
    x = 11,985.03

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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.