Home / 39,430.56-54,414-21,525.56

Finding the Fourth Proportional to 39,430.56, 54,414 and 21,525.56

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Solution

The fourth proportional to 39,430.56, 54,414 and 21,525.56 is: 29,705.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,430.56 : 54,414 = 21,525.56 : x
  2. Step 2: Convert to fraction form
    39,430.56/54,414 = 21,525.56/x
  3. Step 3: Cross multiply
    39,430.56x = 54,414 × 21,525.56
  4. Step 4: Simplify right side
    39,430.56x = 1,171,291,821.84
  5. Step 5: Solve for x
    x = 1,171,291,821.84/39,430.56
  6. Step 6: Final answer
    x = 29,705.18

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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.