Home / 18,820.95-25,973.10-10,861.62

Finding the Fourth Proportional to 18,820.95, 25,973.10 and 10,861.62

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Solution

The fourth proportional to 18,820.95, 25,973.10 and 10,861.62 is: 14,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.95 : 25,973.10 = 10,861.62 : x
  2. Step 2: Convert to fraction form
    18,820.95/25,973.10 = 10,861.62/x
  3. Step 3: Cross multiply
    18,820.95x = 25,973.10 × 10,861.62
  4. Step 4: Simplify right side
    18,820.95x = 282,109,942.42
  5. Step 5: Solve for x
    x = 282,109,942.42/18,820.95
  6. Step 6: Final answer
    x = 14,989.14

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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.