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Finding the Fourth Proportional to 9,681.61, 14,500.68 and 8,415.94

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Solution

The fourth proportional to 9,681.61, 14,500.68 and 8,415.94 is: 12,605.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.61 : 14,500.68 = 8,415.94 : x
  2. Step 2: Convert to fraction form
    9,681.61/14,500.68 = 8,415.94/x
  3. Step 3: Cross multiply
    9,681.61x = 14,500.68 × 8,415.94
  4. Step 4: Simplify right side
    9,681.61x = 122,036,852.84
  5. Step 5: Solve for x
    x = 122,036,852.84/9,681.61
  6. Step 6: Final answer
    x = 12,605.02

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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.