Home / 14,931.96-20,601.16-8,639.88

Finding the Fourth Proportional to 14,931.96, 20,601.16 and 8,639.88

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Solution

The fourth proportional to 14,931.96, 20,601.16 and 8,639.88 is: 11,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,931.96 : 20,601.16 = 8,639.88 : x
  2. Step 2: Convert to fraction form
    14,931.96/20,601.16 = 8,639.88/x
  3. Step 3: Cross multiply
    14,931.96x = 20,601.16 × 8,639.88
  4. Step 4: Simplify right side
    14,931.96x = 177,991,550.26
  5. Step 5: Solve for x
    x = 177,991,550.26/14,931.96
  6. Step 6: Final answer
    x = 11,920.17

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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.