Home / 15,525.87-21,424.93-8,812.11

Finding the Fourth Proportional to 15,525.87, 21,424.93 and 8,812.11

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Solution

The fourth proportional to 15,525.87, 21,424.93 and 8,812.11 is: 12,160.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.87 : 21,424.93 = 8,812.11 : x
  2. Step 2: Convert to fraction form
    15,525.87/21,424.93 = 8,812.11/x
  3. Step 3: Cross multiply
    15,525.87x = 21,424.93 × 8,812.11
  4. Step 4: Simplify right side
    15,525.87x = 188,798,839.90
  5. Step 5: Solve for x
    x = 188,798,839.90/15,525.87
  6. Step 6: Final answer
    x = 12,160.27

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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.