Home / 15,535.14-21,434.81-8,819.30

Finding the Fourth Proportional to 15,535.14, 21,434.81 and 8,819.30

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Solution

The fourth proportional to 15,535.14, 21,434.81 and 8,819.30 is: 12,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.14 : 21,434.81 = 8,819.30 : x
  2. Step 2: Convert to fraction form
    15,535.14/21,434.81 = 8,819.30/x
  3. Step 3: Cross multiply
    15,535.14x = 21,434.81 × 8,819.30
  4. Step 4: Simplify right side
    15,535.14x = 189,039,868.56
  5. Step 5: Solve for x
    x = 189,039,868.56/15,535.14
  6. Step 6: Final answer
    x = 12,168.53

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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.