Home / 45,021.79-67,520.80-13,423.33

Finding the Fourth Proportional to 45,021.79, 67,520.80 and 13,423.33

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Solution

The fourth proportional to 45,021.79, 67,520.80 and 13,423.33 is: 20,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,021.79 : 67,520.80 = 13,423.33 : x
  2. Step 2: Convert to fraction form
    45,021.79/67,520.80 = 13,423.33/x
  3. Step 3: Cross multiply
    45,021.79x = 67,520.80 × 13,423.33
  4. Step 4: Simplify right side
    45,021.79x = 906,353,980.26
  5. Step 5: Solve for x
    x = 906,353,980.26/45,021.79
  6. Step 6: Final answer
    x = 20,131.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.