Home / 38,440.01-57,678.47-20,909.84

Finding the Fourth Proportional to 38,440.01, 57,678.47 and 20,909.84

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Solution

The fourth proportional to 38,440.01, 57,678.47 and 20,909.84 is: 31,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,440.01 : 57,678.47 = 20,909.84 : x
  2. Step 2: Convert to fraction form
    38,440.01/57,678.47 = 20,909.84/x
  3. Step 3: Cross multiply
    38,440.01x = 57,678.47 × 20,909.84
  4. Step 4: Simplify right side
    38,440.01x = 1,206,047,579.14
  5. Step 5: Solve for x
    x = 1,206,047,579.14/38,440.01
  6. Step 6: Final answer
    x = 31,374.80

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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.