Home / 12,164.68-18,247.44-10,421.46

Finding the Fourth Proportional to 12,164.68, 18,247.44 and 10,421.46

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Solution

The fourth proportional to 12,164.68, 18,247.44 and 10,421.46 is: 15,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.68 : 18,247.44 = 10,421.46 : x
  2. Step 2: Convert to fraction form
    12,164.68/18,247.44 = 10,421.46/x
  3. Step 3: Cross multiply
    12,164.68x = 18,247.44 × 10,421.46
  4. Step 4: Simplify right side
    12,164.68x = 190,164,966.06
  5. Step 5: Solve for x
    x = 190,164,966.06/12,164.68
  6. Step 6: Final answer
    x = 15,632.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.