Home / 15,206.90-20,985.31-8,492.64

Finding the Fourth Proportional to 15,206.90, 20,985.31 and 8,492.64

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Solution

The fourth proportional to 15,206.90, 20,985.31 and 8,492.64 is: 11,719.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.90 : 20,985.31 = 8,492.64 : x
  2. Step 2: Convert to fraction form
    15,206.90/20,985.31 = 8,492.64/x
  3. Step 3: Cross multiply
    15,206.90x = 20,985.31 × 8,492.64
  4. Step 4: Simplify right side
    15,206.90x = 178,220,661.89
  5. Step 5: Solve for x
    x = 178,220,661.89/15,206.90
  6. Step 6: Final answer
    x = 11,719.73

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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.