Home / 19,632.20-29,429.10-7,929.80

Finding the Fourth Proportional to 19,632.20, 29,429.10 and 7,929.80

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Solution

The fourth proportional to 19,632.20, 29,429.10 and 7,929.80 is: 11,886.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,632.20 : 29,429.10 = 7,929.80 : x
  2. Step 2: Convert to fraction form
    19,632.20/29,429.10 = 7,929.80/x
  3. Step 3: Cross multiply
    19,632.20x = 29,429.10 × 7,929.80
  4. Step 4: Simplify right side
    19,632.20x = 233,366,877.18
  5. Step 5: Solve for x
    x = 233,366,877.18/19,632.20
  6. Step 6: Final answer
    x = 11,886.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.