Home / 21,806.64-30,109.91-15,852.53

Finding the Fourth Proportional to 21,806.64, 30,109.91 and 15,852.53

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Solution

The fourth proportional to 21,806.64, 30,109.91 and 15,852.53 is: 21,888.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.64 : 30,109.91 = 15,852.53 : x
  2. Step 2: Convert to fraction form
    21,806.64/30,109.91 = 15,852.53/x
  3. Step 3: Cross multiply
    21,806.64x = 30,109.91 × 15,852.53
  4. Step 4: Simplify right side
    21,806.64x = 477,318,247.58
  5. Step 5: Solve for x
    x = 477,318,247.58/21,806.64
  6. Step 6: Final answer
    x = 21,888.67

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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.