Home / 38,210.40-57,315.36-20,790.94

Finding the Fourth Proportional to 38,210.40, 57,315.36 and 20,790.94

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Solution

The fourth proportional to 38,210.40, 57,315.36 and 20,790.94 is: 31,186.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,210.40 : 57,315.36 = 20,790.94 : x
  2. Step 2: Convert to fraction form
    38,210.40/57,315.36 = 20,790.94/x
  3. Step 3: Cross multiply
    38,210.40x = 57,315.36 × 20,790.94
  4. Step 4: Simplify right side
    38,210.40x = 1,191,640,210.84
  5. Step 5: Solve for x
    x = 1,191,640,210.84/38,210.40
  6. Step 6: Final answer
    x = 31,186.28

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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.