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Finding the Fourth Proportional to 13,348.40, 19,984.20 and 8,164.40

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Solution

The fourth proportional to 13,348.40, 19,984.20 and 8,164.40 is: 12,223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.40 : 19,984.20 = 8,164.40 : x
  2. Step 2: Convert to fraction form
    13,348.40/19,984.20 = 8,164.40/x
  3. Step 3: Cross multiply
    13,348.40x = 19,984.20 × 8,164.40
  4. Step 4: Simplify right side
    13,348.40x = 163,159,002.48
  5. Step 5: Solve for x
    x = 163,159,002.48/13,348.40
  6. Step 6: Final answer
    x = 12,223.11

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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.