Home / 18,486.42-25,510.69-10,529.78

Finding the Fourth Proportional to 18,486.42, 25,510.69 and 10,529.78

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Solution

The fourth proportional to 18,486.42, 25,510.69 and 10,529.78 is: 14,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.42 : 25,510.69 = 10,529.78 : x
  2. Step 2: Convert to fraction form
    18,486.42/25,510.69 = 10,529.78/x
  3. Step 3: Cross multiply
    18,486.42x = 25,510.69 × 10,529.78
  4. Step 4: Simplify right side
    18,486.42x = 268,621,953.35
  5. Step 5: Solve for x
    x = 268,621,953.35/18,486.42
  6. Step 6: Final answer
    x = 14,530.77

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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.