Home / 39,443.04-54,430.40-21,538.56

Finding the Fourth Proportional to 39,443.04, 54,430.40 and 21,538.56

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Solution

The fourth proportional to 39,443.04, 54,430.40 and 21,538.56 is: 29,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.04 : 54,430.40 = 21,538.56 : x
  2. Step 2: Convert to fraction form
    39,443.04/54,430.40 = 21,538.56/x
  3. Step 3: Cross multiply
    39,443.04x = 54,430.40 × 21,538.56
  4. Step 4: Simplify right side
    39,443.04x = 1,172,352,436.22
  5. Step 5: Solve for x
    x = 1,172,352,436.22/39,443.04
  6. Step 6: Final answer
    x = 29,722.67

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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.