Home / 14,992.28-20,688.18-8,705.12

Finding the Fourth Proportional to 14,992.28, 20,688.18 and 8,705.12

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Solution

The fourth proportional to 14,992.28, 20,688.18 and 8,705.12 is: 12,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.28 : 20,688.18 = 8,705.12 : x
  2. Step 2: Convert to fraction form
    14,992.28/20,688.18 = 8,705.12/x
  3. Step 3: Cross multiply
    14,992.28x = 20,688.18 × 8,705.12
  4. Step 4: Simplify right side
    14,992.28x = 180,093,089.48
  5. Step 5: Solve for x
    x = 180,093,089.48/14,992.28
  6. Step 6: Final answer
    x = 12,012.39

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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.