Home / 15,525.28-21,425.12-8,451.84

Finding the Fourth Proportional to 15,525.28, 21,425.12 and 8,451.84

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Solution

The fourth proportional to 15,525.28, 21,425.12 and 8,451.84 is: 11,663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.28 : 21,425.12 = 8,451.84 : x
  2. Step 2: Convert to fraction form
    15,525.28/21,425.12 = 8,451.84/x
  3. Step 3: Cross multiply
    15,525.28x = 21,425.12 × 8,451.84
  4. Step 4: Simplify right side
    15,525.28x = 181,081,686.22
  5. Step 5: Solve for x
    x = 181,081,686.22/15,525.28
  6. Step 6: Final answer
    x = 11,663.67

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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.