Home / 15,675.45-21,632.74-8,602.12

Finding the Fourth Proportional to 15,675.45, 21,632.74 and 8,602.12

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Solution

The fourth proportional to 15,675.45, 21,632.74 and 8,602.12 is: 11,871.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.45 : 21,632.74 = 8,602.12 : x
  2. Step 2: Convert to fraction form
    15,675.45/21,632.74 = 8,602.12/x
  3. Step 3: Cross multiply
    15,675.45x = 21,632.74 × 8,602.12
  4. Step 4: Simplify right side
    15,675.45x = 186,087,425.41
  5. Step 5: Solve for x
    x = 186,087,425.41/15,675.45
  6. Step 6: Final answer
    x = 11,871.27

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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.