Home / 19,920.10-29,924.70-16,639.60

Finding the Fourth Proportional to 19,920.10, 29,924.70 and 16,639.60

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Solution

The fourth proportional to 19,920.10, 29,924.70 and 16,639.60 is: 24,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.10 : 29,924.70 = 16,639.60 : x
  2. Step 2: Convert to fraction form
    19,920.10/29,924.70 = 16,639.60/x
  3. Step 3: Cross multiply
    19,920.10x = 29,924.70 × 16,639.60
  4. Step 4: Simplify right side
    19,920.10x = 497,935,038.12
  5. Step 5: Solve for x
    x = 497,935,038.12/19,920.10
  6. Step 6: Final answer
    x = 24,996.61

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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.