Home / 15,534.14-21,429.79-10,500.12

Finding the Fourth Proportional to 15,534.14, 21,429.79 and 10,500.12

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Solution

The fourth proportional to 15,534.14, 21,429.79 and 10,500.12 is: 14,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.14 : 21,429.79 = 10,500.12 : x
  2. Step 2: Convert to fraction form
    15,534.14/21,429.79 = 10,500.12/x
  3. Step 3: Cross multiply
    15,534.14x = 21,429.79 × 10,500.12
  4. Step 4: Simplify right side
    15,534.14x = 225,015,340.32
  5. Step 5: Solve for x
    x = 225,015,340.32/15,534.14
  6. Step 6: Final answer
    x = 14,485.21

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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.