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Finding the Fourth Proportional to 8,700.46, 12,030.25 and 8,559.79

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Solution

The fourth proportional to 8,700.46, 12,030.25 and 8,559.79 is: 11,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.46 : 12,030.25 = 8,559.79 : x
  2. Step 2: Convert to fraction form
    8,700.46/12,030.25 = 8,559.79/x
  3. Step 3: Cross multiply
    8,700.46x = 12,030.25 × 8,559.79
  4. Step 4: Simplify right side
    8,700.46x = 102,976,413.65
  5. Step 5: Solve for x
    x = 102,976,413.65/8,700.46
  6. Step 6: Final answer
    x = 11,835.74

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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.