Home / 39,387.96-54,353.67-21,483.06

Finding the Fourth Proportional to 39,387.96, 54,353.67 and 21,483.06

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Solution

The fourth proportional to 39,387.96, 54,353.67 and 21,483.06 is: 29,645.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.96 : 54,353.67 = 21,483.06 : x
  2. Step 2: Convert to fraction form
    39,387.96/54,353.67 = 21,483.06/x
  3. Step 3: Cross multiply
    39,387.96x = 54,353.67 × 21,483.06
  4. Step 4: Simplify right side
    39,387.96x = 1,167,683,153.83
  5. Step 5: Solve for x
    x = 1,167,683,153.83/39,387.96
  6. Step 6: Final answer
    x = 29,645.69

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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.