Home / 38,700.96-53,407.91-21,708.97

Finding the Fourth Proportional to 38,700.96, 53,407.91 and 21,708.97

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Solution

The fourth proportional to 38,700.96, 53,407.91 and 21,708.97 is: 29,958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,700.96 : 53,407.91 = 21,708.97 : x
  2. Step 2: Convert to fraction form
    38,700.96/53,407.91 = 21,708.97/x
  3. Step 3: Cross multiply
    38,700.96x = 53,407.91 × 21,708.97
  4. Step 4: Simplify right side
    38,700.96x = 1,159,430,715.95
  5. Step 5: Solve for x
    x = 1,159,430,715.95/38,700.96
  6. Step 6: Final answer
    x = 29,958.71

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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.