Home / 20,487.36-30,706.74-8,775.84

Finding the Fourth Proportional to 20,487.36, 30,706.74 and 8,775.84

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Solution

The fourth proportional to 20,487.36, 30,706.74 and 8,775.84 is: 13,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.36 : 30,706.74 = 8,775.84 : x
  2. Step 2: Convert to fraction form
    20,487.36/30,706.74 = 8,775.84/x
  3. Step 3: Cross multiply
    20,487.36x = 30,706.74 × 8,775.84
  4. Step 4: Simplify right side
    20,487.36x = 269,477,437.16
  5. Step 5: Solve for x
    x = 269,477,437.16/20,487.36
  6. Step 6: Final answer
    x = 13,153.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.