Home / 38,510.30-57,736.65-20,999.90

Finding the Fourth Proportional to 38,510.30, 57,736.65 and 20,999.90

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Solution

The fourth proportional to 38,510.30, 57,736.65 and 20,999.90 is: 31,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,510.30 : 57,736.65 = 20,999.90 : x
  2. Step 2: Convert to fraction form
    38,510.30/57,736.65 = 20,999.90/x
  3. Step 3: Cross multiply
    38,510.30x = 57,736.65 × 20,999.90
  4. Step 4: Simplify right side
    38,510.30x = 1,212,463,876.34
  5. Step 5: Solve for x
    x = 1,212,463,876.34/38,510.30
  6. Step 6: Final answer
    x = 31,484.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.