Home / 11,511.18-15,885.27-6,475.40

Finding the Fourth Proportional to 11,511.18, 15,885.27 and 6,475.40

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Solution

The fourth proportional to 11,511.18, 15,885.27 and 6,475.40 is: 8,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.18 : 15,885.27 = 6,475.40 : x
  2. Step 2: Convert to fraction form
    11,511.18/15,885.27 = 6,475.40/x
  3. Step 3: Cross multiply
    11,511.18x = 15,885.27 × 6,475.40
  4. Step 4: Simplify right side
    11,511.18x = 102,863,457.50
  5. Step 5: Solve for x
    x = 102,863,457.50/11,511.18
  6. Step 6: Final answer
    x = 8,935.96

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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.