Home / 18,898.21-26,080.11-10,400.62

Finding the Fourth Proportional to 18,898.21, 26,080.11 and 10,400.62

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Solution

The fourth proportional to 18,898.21, 26,080.11 and 10,400.62 is: 14,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.21 : 26,080.11 = 10,400.62 : x
  2. Step 2: Convert to fraction form
    18,898.21/26,080.11 = 10,400.62/x
  3. Step 3: Cross multiply
    18,898.21x = 26,080.11 × 10,400.62
  4. Step 4: Simplify right side
    18,898.21x = 271,249,313.67
  5. Step 5: Solve for x
    x = 271,249,313.67/18,898.21
  6. Step 6: Final answer
    x = 14,353.17

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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.