Home / 18,621.53-25,697.82-10,123.72

Finding the Fourth Proportional to 18,621.53, 25,697.82 and 10,123.72

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Solution

The fourth proportional to 18,621.53, 25,697.82 and 10,123.72 is: 13,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.53 : 25,697.82 = 10,123.72 : x
  2. Step 2: Convert to fraction form
    18,621.53/25,697.82 = 10,123.72/x
  3. Step 3: Cross multiply
    18,621.53x = 25,697.82 × 10,123.72
  4. Step 4: Simplify right side
    18,621.53x = 260,157,534.29
  5. Step 5: Solve for x
    x = 260,157,534.29/18,621.53
  6. Step 6: Final answer
    x = 13,970.79

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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.