Home / 38,109.13-52,590.49-21,113.40

Finding the Fourth Proportional to 38,109.13, 52,590.49 and 21,113.40

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Solution

The fourth proportional to 38,109.13, 52,590.49 and 21,113.40 is: 29,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,109.13 : 52,590.49 = 21,113.40 : x
  2. Step 2: Convert to fraction form
    38,109.13/52,590.49 = 21,113.40/x
  3. Step 3: Cross multiply
    38,109.13x = 52,590.49 × 21,113.40
  4. Step 4: Simplify right side
    38,109.13x = 1,110,364,051.57
  5. Step 5: Solve for x
    x = 1,110,364,051.57/38,109.13
  6. Step 6: Final answer
    x = 29,136.43

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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.