Home / 13,933.45-19,232.54-9,402.72

Finding the Fourth Proportional to 13,933.45, 19,232.54 and 9,402.72

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Solution

The fourth proportional to 13,933.45, 19,232.54 and 9,402.72 is: 12,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.45 : 19,232.54 = 9,402.72 : x
  2. Step 2: Convert to fraction form
    13,933.45/19,232.54 = 9,402.72/x
  3. Step 3: Cross multiply
    13,933.45x = 19,232.54 × 9,402.72
  4. Step 4: Simplify right side
    13,933.45x = 180,838,188.51
  5. Step 5: Solve for x
    x = 180,838,188.51/13,933.45
  6. Step 6: Final answer
    x = 12,978.71

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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.