Home / 15,360.32-21,188.64-10,383.68

Finding the Fourth Proportional to 15,360.32, 21,188.64 and 10,383.68

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Solution

The fourth proportional to 15,360.32, 21,188.64 and 10,383.68 is: 14,323.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.32 : 21,188.64 = 10,383.68 : x
  2. Step 2: Convert to fraction form
    15,360.32/21,188.64 = 10,383.68/x
  3. Step 3: Cross multiply
    15,360.32x = 21,188.64 × 10,383.68
  4. Step 4: Simplify right side
    15,360.32x = 220,016,057.40
  5. Step 5: Solve for x
    x = 220,016,057.40/15,360.32
  6. Step 6: Final answer
    x = 14,323.66

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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.