Home / 15,530.33-21,426.23-8,812.07

Finding the Fourth Proportional to 15,530.33, 21,426.23 and 8,812.07

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Solution

The fourth proportional to 15,530.33, 21,426.23 and 8,812.07 is: 12,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.33 : 21,426.23 = 8,812.07 : x
  2. Step 2: Convert to fraction form
    15,530.33/21,426.23 = 8,812.07/x
  3. Step 3: Cross multiply
    15,530.33x = 21,426.23 × 8,812.07
  4. Step 4: Simplify right side
    15,530.33x = 188,809,303.93
  5. Step 5: Solve for x
    x = 188,809,303.93/15,530.33
  6. Step 6: Final answer
    x = 12,157.45

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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.