Home / 15,829.08-21,829.68-13,590.24

Finding the Fourth Proportional to 15,829.08, 21,829.68 and 13,590.24

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Solution

The fourth proportional to 15,829.08, 21,829.68 and 13,590.24 is: 18,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.08 : 21,829.68 = 13,590.24 : x
  2. Step 2: Convert to fraction form
    15,829.08/21,829.68 = 13,590.24/x
  3. Step 3: Cross multiply
    15,829.08x = 21,829.68 × 13,590.24
  4. Step 4: Simplify right side
    15,829.08x = 296,670,590.32
  5. Step 5: Solve for x
    x = 296,670,590.32/15,829.08
  6. Step 6: Final answer
    x = 18,742.12

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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.