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Finding the Fourth Proportional to 13,427.51, 18,529.99 and 7,459.03

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Solution

The fourth proportional to 13,427.51, 18,529.99 and 7,459.03 is: 10,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.51 : 18,529.99 = 7,459.03 : x
  2. Step 2: Convert to fraction form
    13,427.51/18,529.99 = 7,459.03/x
  3. Step 3: Cross multiply
    13,427.51x = 18,529.99 × 7,459.03
  4. Step 4: Simplify right side
    13,427.51x = 138,215,686.34
  5. Step 5: Solve for x
    x = 138,215,686.34/13,427.51
  6. Step 6: Final answer
    x = 10,293.47

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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.