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Finding the Fourth Proportional to 8,555.16, 12,823.02 and 8,360.76

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Solution

The fourth proportional to 8,555.16, 12,823.02 and 8,360.76 is: 12,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.16 : 12,823.02 = 8,360.76 : x
  2. Step 2: Convert to fraction form
    8,555.16/12,823.02 = 8,360.76/x
  3. Step 3: Cross multiply
    8,555.16x = 12,823.02 × 8,360.76
  4. Step 4: Simplify right side
    8,555.16x = 107,210,192.70
  5. Step 5: Solve for x
    x = 107,210,192.70/8,555.16
  6. Step 6: Final answer
    x = 12,531.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.