Home / 38,971.45-53,780.43-21,066.49

Finding the Fourth Proportional to 38,971.45, 53,780.43 and 21,066.49

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Solution

The fourth proportional to 38,971.45, 53,780.43 and 21,066.49 is: 29,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,971.45 : 53,780.43 = 21,066.49 : x
  2. Step 2: Convert to fraction form
    38,971.45/53,780.43 = 21,066.49/x
  3. Step 3: Cross multiply
    38,971.45x = 53,780.43 × 21,066.49
  4. Step 4: Simplify right side
    38,971.45x = 1,132,964,890.79
  5. Step 5: Solve for x
    x = 1,132,964,890.79/38,971.45
  6. Step 6: Final answer
    x = 29,071.66

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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.