Home / 39,231.50-54,139.66-21,326.50

Finding the Fourth Proportional to 39,231.50, 54,139.66 and 21,326.50

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Solution

The fourth proportional to 39,231.50, 54,139.66 and 21,326.50 is: 29,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.50 : 54,139.66 = 21,326.50 : x
  2. Step 2: Convert to fraction form
    39,231.50/54,139.66 = 21,326.50/x
  3. Step 3: Cross multiply
    39,231.50x = 54,139.66 × 21,326.50
  4. Step 4: Simplify right side
    39,231.50x = 1,154,609,458.99
  5. Step 5: Solve for x
    x = 1,154,609,458.99/39,231.50
  6. Step 6: Final answer
    x = 29,430.67

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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.