Home / 15,364.99-21,206.28-8,903.67

Finding the Fourth Proportional to 15,364.99, 21,206.28 and 8,903.67

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Solution

The fourth proportional to 15,364.99, 21,206.28 and 8,903.67 is: 12,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,364.99 : 21,206.28 = 8,903.67 : x
  2. Step 2: Convert to fraction form
    15,364.99/21,206.28 = 8,903.67/x
  3. Step 3: Cross multiply
    15,364.99x = 21,206.28 × 8,903.67
  4. Step 4: Simplify right side
    15,364.99x = 188,813,719.05
  5. Step 5: Solve for x
    x = 188,813,719.05/15,364.99
  6. Step 6: Final answer
    x = 12,288.57

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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.