Home / 21,632.56-29,852.98-12,678.28

Finding the Fourth Proportional to 21,632.56, 29,852.98 and 12,678.28

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Solution

The fourth proportional to 21,632.56, 29,852.98 and 12,678.28 is: 17,496.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.56 : 29,852.98 = 12,678.28 : x
  2. Step 2: Convert to fraction form
    21,632.56/29,852.98 = 12,678.28/x
  3. Step 3: Cross multiply
    21,632.56x = 29,852.98 × 12,678.28
  4. Step 4: Simplify right side
    21,632.56x = 378,484,439.27
  5. Step 5: Solve for x
    x = 378,484,439.27/21,632.56
  6. Step 6: Final answer
    x = 17,496.05

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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.