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Finding the Fourth Proportional to 14,119.40, 21,203.40 and 9,210.80

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Solution

The fourth proportional to 14,119.40, 21,203.40 and 9,210.80 is: 13,832.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.40 : 21,203.40 = 9,210.80 : x
  2. Step 2: Convert to fraction form
    14,119.40/21,203.40 = 9,210.80/x
  3. Step 3: Cross multiply
    14,119.40x = 21,203.40 × 9,210.80
  4. Step 4: Simplify right side
    14,119.40x = 195,300,276.72
  5. Step 5: Solve for x
    x = 195,300,276.72/14,119.40
  6. Step 6: Final answer
    x = 13,832.05

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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.