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Finding the Fourth Proportional to 18,607.40, 25,678.02 and 10,109.34

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Solution

The fourth proportional to 18,607.40, 25,678.02 and 10,109.34 is: 13,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.40 : 25,678.02 = 10,109.34 : x
  2. Step 2: Convert to fraction form
    18,607.40/25,678.02 = 10,109.34/x
  3. Step 3: Cross multiply
    18,607.40x = 25,678.02 × 10,109.34
  4. Step 4: Simplify right side
    18,607.40x = 259,587,834.71
  5. Step 5: Solve for x
    x = 259,587,834.71/18,607.40
  6. Step 6: Final answer
    x = 13,950.79

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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.