Home / 39,308.34-54,243.88-21,403.30

Finding the Fourth Proportional to 39,308.34, 54,243.88 and 21,403.30

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Solution

The fourth proportional to 39,308.34, 54,243.88 and 21,403.30 is: 29,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.34 : 54,243.88 = 21,403.30 : x
  2. Step 2: Convert to fraction form
    39,308.34/54,243.88 = 21,403.30/x
  3. Step 3: Cross multiply
    39,308.34x = 54,243.88 × 21,403.30
  4. Step 4: Simplify right side
    39,308.34x = 1,160,998,036.80
  5. Step 5: Solve for x
    x = 1,160,998,036.80/39,308.34
  6. Step 6: Final answer
    x = 29,535.67

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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.