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Finding the Fourth Proportional to 13,264.84, 18,303.42 and 8,555.50

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Solution

The fourth proportional to 13,264.84, 18,303.42 and 8,555.50 is: 11,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,264.84 : 18,303.42 = 8,555.50 : x
  2. Step 2: Convert to fraction form
    13,264.84/18,303.42 = 8,555.50/x
  3. Step 3: Cross multiply
    13,264.84x = 18,303.42 × 8,555.50
  4. Step 4: Simplify right side
    13,264.84x = 156,594,909.81
  5. Step 5: Solve for x
    x = 156,594,909.81/13,264.84
  6. Step 6: Final answer
    x = 11,805.26

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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.