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Finding the Fourth Proportional to 9,309.30, 13,963.95 and 9,212.10

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Solution

The fourth proportional to 9,309.30, 13,963.95 and 9,212.10 is: 13,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,309.30 : 13,963.95 = 9,212.10 : x
  2. Step 2: Convert to fraction form
    9,309.30/13,963.95 = 9,212.10/x
  3. Step 3: Cross multiply
    9,309.30x = 13,963.95 × 9,212.10
  4. Step 4: Simplify right side
    9,309.30x = 128,637,303.80
  5. Step 5: Solve for x
    x = 128,637,303.80/9,309.30
  6. Step 6: Final answer
    x = 13,818.15

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Similar ratio
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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.