Home / 11,818.17-16,308.99-6,440.58

Finding the Fourth Proportional to 11,818.17, 16,308.99 and 6,440.58

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Solution

The fourth proportional to 11,818.17, 16,308.99 and 6,440.58 is: 8,887.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.17 : 16,308.99 = 6,440.58 : x
  2. Step 2: Convert to fraction form
    11,818.17/16,308.99 = 6,440.58/x
  3. Step 3: Cross multiply
    11,818.17x = 16,308.99 × 6,440.58
  4. Step 4: Simplify right side
    11,818.17x = 105,039,354.81
  5. Step 5: Solve for x
    x = 105,039,354.81/11,818.17
  6. Step 6: Final answer
    x = 8,887.95

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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.