Home / 11,555.58-15,946.70-6,520.87

Finding the Fourth Proportional to 11,555.58, 15,946.70 and 6,520.87

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Solution

The fourth proportional to 11,555.58, 15,946.70 and 6,520.87 is: 8,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.58 : 15,946.70 = 6,520.87 : x
  2. Step 2: Convert to fraction form
    11,555.58/15,946.70 = 6,520.87/x
  3. Step 3: Cross multiply
    11,555.58x = 15,946.70 × 6,520.87
  4. Step 4: Simplify right side
    11,555.58x = 103,986,337.29
  5. Step 5: Solve for x
    x = 103,986,337.29/11,555.58
  6. Step 6: Final answer
    x = 8,998.80

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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.