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Finding the Fourth Proportional to 8,985.64, 13,457.52 and 8,674.18

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Solution

The fourth proportional to 8,985.64, 13,457.52 and 8,674.18 is: 12,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.64 : 13,457.52 = 8,674.18 : x
  2. Step 2: Convert to fraction form
    8,985.64/13,457.52 = 8,674.18/x
  3. Step 3: Cross multiply
    8,985.64x = 13,457.52 × 8,674.18
  4. Step 4: Simplify right side
    8,985.64x = 116,732,950.83
  5. Step 5: Solve for x
    x = 116,732,950.83/8,985.64
  6. Step 6: Final answer
    x = 12,991.06

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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.