Home / 18,135.81-25,014.83-14,778.63

Finding the Fourth Proportional to 18,135.81, 25,014.83 and 14,778.63

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Solution

The fourth proportional to 18,135.81, 25,014.83 and 14,778.63 is: 20,384.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.81 : 25,014.83 = 14,778.63 : x
  2. Step 2: Convert to fraction form
    18,135.81/25,014.83 = 14,778.63/x
  3. Step 3: Cross multiply
    18,135.81x = 25,014.83 × 14,778.63
  4. Step 4: Simplify right side
    18,135.81x = 369,684,843.19
  5. Step 5: Solve for x
    x = 369,684,843.19/18,135.81
  6. Step 6: Final answer
    x = 20,384.25

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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.