Home / 18,384.40-25,369.74-10,000.90

Finding the Fourth Proportional to 18,384.40, 25,369.74 and 10,000.90

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Solution

The fourth proportional to 18,384.40, 25,369.74 and 10,000.90 is: 13,800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.40 : 25,369.74 = 10,000.90 : x
  2. Step 2: Convert to fraction form
    18,384.40/25,369.74 = 10,000.90/x
  3. Step 3: Cross multiply
    18,384.40x = 25,369.74 × 10,000.90
  4. Step 4: Simplify right side
    18,384.40x = 253,720,232.77
  5. Step 5: Solve for x
    x = 253,720,232.77/18,384.40
  6. Step 6: Final answer
    x = 13,800.84

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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.