Home / 45,138.98-67,708.40-13,549.01

Finding the Fourth Proportional to 45,138.98, 67,708.40 and 13,549.01

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Solution

The fourth proportional to 45,138.98, 67,708.40 and 13,549.01 is: 20,323.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.98 : 67,708.40 = 13,549.01 : x
  2. Step 2: Convert to fraction form
    45,138.98/67,708.40 = 13,549.01/x
  3. Step 3: Cross multiply
    45,138.98x = 67,708.40 × 13,549.01
  4. Step 4: Simplify right side
    45,138.98x = 917,381,788.68
  5. Step 5: Solve for x
    x = 917,381,788.68/45,138.98
  6. Step 6: Final answer
    x = 20,323.49

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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.