Home / 38,775.11-53,505.87-21,775.50

Finding the Fourth Proportional to 38,775.11, 53,505.87 and 21,775.50

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Solution

The fourth proportional to 38,775.11, 53,505.87 and 21,775.50 is: 30,048.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,775.11 : 53,505.87 = 21,775.50 : x
  2. Step 2: Convert to fraction form
    38,775.11/53,505.87 = 21,775.50/x
  3. Step 3: Cross multiply
    38,775.11x = 53,505.87 × 21,775.50
  4. Step 4: Simplify right side
    38,775.11x = 1,165,116,990.53
  5. Step 5: Solve for x
    x = 1,165,116,990.53/38,775.11
  6. Step 6: Final answer
    x = 30,048.07

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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.