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Finding the Fourth Proportional to 15,450.01, 21,312.79 and 9,402.10

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Solution

The fourth proportional to 15,450.01, 21,312.79 and 9,402.10 is: 12,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.01 : 21,312.79 = 9,402.10 : x
  2. Step 2: Convert to fraction form
    15,450.01/21,312.79 = 9,402.10/x
  3. Step 3: Cross multiply
    15,450.01x = 21,312.79 × 9,402.10
  4. Step 4: Simplify right side
    15,450.01x = 200,384,982.86
  5. Step 5: Solve for x
    x = 200,384,982.86/15,450.01
  6. Step 6: Final answer
    x = 12,969.89

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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.