Home / 18,383.90-25,369.05-10,000.40

Finding the Fourth Proportional to 18,383.90, 25,369.05 and 10,000.40

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Solution

The fourth proportional to 18,383.90, 25,369.05 and 10,000.40 is: 13,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.90 : 25,369.05 = 10,000.40 : x
  2. Step 2: Convert to fraction form
    18,383.90/25,369.05 = 10,000.40/x
  3. Step 3: Cross multiply
    18,383.90x = 25,369.05 × 10,000.40
  4. Step 4: Simplify right side
    18,383.90x = 253,700,647.62
  5. Step 5: Solve for x
    x = 253,700,647.62/18,383.90
  6. Step 6: Final answer
    x = 13,800.15

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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.