Home / 39,412.58-54,389.21-21,507.46

Finding the Fourth Proportional to 39,412.58, 54,389.21 and 21,507.46

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Solution

The fourth proportional to 39,412.58, 54,389.21 and 21,507.46 is: 29,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.58 : 54,389.21 = 21,507.46 : x
  2. Step 2: Convert to fraction form
    39,412.58/54,389.21 = 21,507.46/x
  3. Step 3: Cross multiply
    39,412.58x = 54,389.21 × 21,507.46
  4. Step 4: Simplify right side
    39,412.58x = 1,169,773,515.00
  5. Step 5: Solve for x
    x = 1,169,773,515.00/39,412.58
  6. Step 6: Final answer
    x = 29,680.21

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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.