Home / 14,981.21-20,670.38-9,158.85

Finding the Fourth Proportional to 14,981.21, 20,670.38 and 9,158.85

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Solution

The fourth proportional to 14,981.21, 20,670.38 and 9,158.85 is: 12,636.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.21 : 20,670.38 = 9,158.85 : x
  2. Step 2: Convert to fraction form
    14,981.21/20,670.38 = 9,158.85/x
  3. Step 3: Cross multiply
    14,981.21x = 20,670.38 × 9,158.85
  4. Step 4: Simplify right side
    14,981.21x = 189,316,909.86
  5. Step 5: Solve for x
    x = 189,316,909.86/14,981.21
  6. Step 6: Final answer
    x = 12,636.96

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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.