Home / 15,631.79-21,571.74-8,461.67

Finding the Fourth Proportional to 15,631.79, 21,571.74 and 8,461.67

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Solution

The fourth proportional to 15,631.79, 21,571.74 and 8,461.67 is: 11,677.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.79 : 21,571.74 = 8,461.67 : x
  2. Step 2: Convert to fraction form
    15,631.79/21,571.74 = 8,461.67/x
  3. Step 3: Cross multiply
    15,631.79x = 21,571.74 × 8,461.67
  4. Step 4: Simplify right side
    15,631.79x = 182,532,999.14
  5. Step 5: Solve for x
    x = 182,532,999.14/15,631.79
  6. Step 6: Final answer
    x = 11,677.04

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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.