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Finding the Fourth Proportional to 18,819, 25,970.76 and 10,436.04

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Solution

The fourth proportional to 18,819, 25,970.76 and 10,436.04 is: 14,402.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819 : 25,970.76 = 10,436.04 : x
  2. Step 2: Convert to fraction form
    18,819/25,970.76 = 10,436.04/x
  3. Step 3: Cross multiply
    18,819x = 25,970.76 × 10,436.04
  4. Step 4: Simplify right side
    18,819x = 271,031,890.19
  5. Step 5: Solve for x
    x = 271,031,890.19/18,819
  6. Step 6: Final answer
    x = 14,402.03

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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.