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Finding the Fourth Proportional to 12,047.40, 16,630.02 and 7,331.40

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Solution

The fourth proportional to 12,047.40, 16,630.02 and 7,331.40 is: 10,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,047.40 : 16,630.02 = 7,331.40 : x
  2. Step 2: Convert to fraction form
    12,047.40/16,630.02 = 7,331.40/x
  3. Step 3: Cross multiply
    12,047.40x = 16,630.02 × 7,331.40
  4. Step 4: Simplify right side
    12,047.40x = 121,921,328.63
  5. Step 5: Solve for x
    x = 121,921,328.63/12,047.40
  6. Step 6: Final answer
    x = 10,120.14

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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.