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Finding the Fourth Proportional to 13,416.61, 18,502.03 and 8,038.18

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Solution

The fourth proportional to 13,416.61, 18,502.03 and 8,038.18 is: 11,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.61 : 18,502.03 = 8,038.18 : x
  2. Step 2: Convert to fraction form
    13,416.61/18,502.03 = 8,038.18/x
  3. Step 3: Cross multiply
    13,416.61x = 18,502.03 × 8,038.18
  4. Step 4: Simplify right side
    13,416.61x = 148,722,647.51
  5. Step 5: Solve for x
    x = 148,722,647.51/13,416.61
  6. Step 6: Final answer
    x = 11,084.96

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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.