Home / 39,431.30-54,416.04-21,527.06

Finding the Fourth Proportional to 39,431.30, 54,416.04 and 21,527.06

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Solution

The fourth proportional to 39,431.30, 54,416.04 and 21,527.06 is: 29,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.30 : 54,416.04 = 21,527.06 : x
  2. Step 2: Convert to fraction form
    39,431.30/54,416.04 = 21,527.06/x
  3. Step 3: Cross multiply
    39,431.30x = 54,416.04 × 21,527.06
  4. Step 4: Simplify right side
    39,431.30x = 1,171,417,358.04
  5. Step 5: Solve for x
    x = 1,171,417,358.04/39,431.30
  6. Step 6: Final answer
    x = 29,707.80

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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.