Home / 15,208.34-20,985.10-8,493.64

Finding the Fourth Proportional to 15,208.34, 20,985.10 and 8,493.64

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Solution

The fourth proportional to 15,208.34, 20,985.10 and 8,493.64 is: 11,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.34 : 20,985.10 = 8,493.64 : x
  2. Step 2: Convert to fraction form
    15,208.34/20,985.10 = 8,493.64/x
  3. Step 3: Cross multiply
    15,208.34x = 20,985.10 × 8,493.64
  4. Step 4: Simplify right side
    15,208.34x = 178,239,811.07
  5. Step 5: Solve for x
    x = 178,239,811.07/15,208.34
  6. Step 6: Final answer
    x = 11,719.88

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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.