Home / 21,173.32-31,755.35-8,681.05

Finding the Fourth Proportional to 21,173.32, 31,755.35 and 8,681.05

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Solution

The fourth proportional to 21,173.32, 31,755.35 and 8,681.05 is: 13,019.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.32 : 31,755.35 = 8,681.05 : x
  2. Step 2: Convert to fraction form
    21,173.32/31,755.35 = 8,681.05/x
  3. Step 3: Cross multiply
    21,173.32x = 31,755.35 × 8,681.05
  4. Step 4: Simplify right side
    21,173.32x = 275,669,737.71
  5. Step 5: Solve for x
    x = 275,669,737.71/21,173.32
  6. Step 6: Final answer
    x = 13,019.67

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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.