Home / 39,222.18-54,125.10-21,316.79

Finding the Fourth Proportional to 39,222.18, 54,125.10 and 21,316.79

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Solution

The fourth proportional to 39,222.18, 54,125.10 and 21,316.79 is: 29,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.18 : 54,125.10 = 21,316.79 : x
  2. Step 2: Convert to fraction form
    39,222.18/54,125.10 = 21,316.79/x
  3. Step 3: Cross multiply
    39,222.18x = 54,125.10 × 21,316.79
  4. Step 4: Simplify right side
    39,222.18x = 1,153,773,119.80
  5. Step 5: Solve for x
    x = 1,153,773,119.80/39,222.18
  6. Step 6: Final answer
    x = 29,416.34

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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.