Home / 21,149.08-29,217.33-13,898.32

Finding the Fourth Proportional to 21,149.08, 29,217.33 and 13,898.32

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Solution

The fourth proportional to 21,149.08, 29,217.33 and 13,898.32 is: 19,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.08 : 29,217.33 = 13,898.32 : x
  2. Step 2: Convert to fraction form
    21,149.08/29,217.33 = 13,898.32/x
  3. Step 3: Cross multiply
    21,149.08x = 29,217.33 × 13,898.32
  4. Step 4: Simplify right side
    21,149.08x = 406,071,801.89
  5. Step 5: Solve for x
    x = 406,071,801.89/21,149.08
  6. Step 6: Final answer
    x = 19,200.45

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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.