Home / 15,509.70-21,402.90-8,795.94

Finding the Fourth Proportional to 15,509.70, 21,402.90 and 8,795.94

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Solution

The fourth proportional to 15,509.70, 21,402.90 and 8,795.94 is: 12,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.70 : 21,402.90 = 8,795.94 : x
  2. Step 2: Convert to fraction form
    15,509.70/21,402.90 = 8,795.94/x
  3. Step 3: Cross multiply
    15,509.70x = 21,402.90 × 8,795.94
  4. Step 4: Simplify right side
    15,509.70x = 188,258,624.23
  5. Step 5: Solve for x
    x = 188,258,624.23/15,509.70
  6. Step 6: Final answer
    x = 12,138.12

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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.