Home / 19,920.10-29,815.35-15,513.70

Finding the Fourth Proportional to 19,920.10, 29,815.35 and 15,513.70

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Solution

The fourth proportional to 19,920.10, 29,815.35 and 15,513.70 is: 23,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.10 : 29,815.35 = 15,513.70 : x
  2. Step 2: Convert to fraction form
    19,920.10/29,815.35 = 15,513.70/x
  3. Step 3: Cross multiply
    19,920.10x = 29,815.35 × 15,513.70
  4. Step 4: Simplify right side
    19,920.10x = 462,546,395.30
  5. Step 5: Solve for x
    x = 462,546,395.30/19,920.10
  6. Step 6: Final answer
    x = 23,220.08

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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.