Home / 13,442.81-18,551.01-7,474.12

Finding the Fourth Proportional to 13,442.81, 18,551.01 and 7,474.12

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Solution

The fourth proportional to 13,442.81, 18,551.01 and 7,474.12 is: 10,314.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.81 : 18,551.01 = 7,474.12 : x
  2. Step 2: Convert to fraction form
    13,442.81/18,551.01 = 7,474.12/x
  3. Step 3: Cross multiply
    13,442.81x = 18,551.01 × 7,474.12
  4. Step 4: Simplify right side
    13,442.81x = 138,652,474.86
  5. Step 5: Solve for x
    x = 138,652,474.86/13,442.81
  6. Step 6: Final answer
    x = 10,314.25

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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.