Home / 38,707.50-53,416.97-21,715.53

Finding the Fourth Proportional to 38,707.50, 53,416.97 and 21,715.53

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Solution

The fourth proportional to 38,707.50, 53,416.97 and 21,715.53 is: 29,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.50 : 53,416.97 = 21,715.53 : x
  2. Step 2: Convert to fraction form
    38,707.50/53,416.97 = 21,715.53/x
  3. Step 3: Cross multiply
    38,707.50x = 53,416.97 × 21,715.53
  4. Step 4: Simplify right side
    38,707.50x = 1,159,977,814.54
  5. Step 5: Solve for x
    x = 1,159,977,814.54/38,707.50
  6. Step 6: Final answer
    x = 29,967.78

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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.