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Finding the Fourth Proportional to 13,630.01, 18,810.32 and 7,581.11

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Solution

The fourth proportional to 13,630.01, 18,810.32 and 7,581.11 is: 10,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.01 : 18,810.32 = 7,581.11 : x
  2. Step 2: Convert to fraction form
    13,630.01/18,810.32 = 7,581.11/x
  3. Step 3: Cross multiply
    13,630.01x = 18,810.32 × 7,581.11
  4. Step 4: Simplify right side
    13,630.01x = 142,602,973.10
  5. Step 5: Solve for x
    x = 142,602,973.10/13,630.01
  6. Step 6: Final answer
    x = 10,462.43

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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.