Home / 21,133.34-29,169.28-12,186.24

Finding the Fourth Proportional to 21,133.34, 29,169.28 and 12,186.24

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Solution

The fourth proportional to 21,133.34, 29,169.28 and 12,186.24 is: 16,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.34 : 29,169.28 = 12,186.24 : x
  2. Step 2: Convert to fraction form
    21,133.34/29,169.28 = 12,186.24/x
  3. Step 3: Cross multiply
    21,133.34x = 29,169.28 × 12,186.24
  4. Step 4: Simplify right side
    21,133.34x = 355,463,846.71
  5. Step 5: Solve for x
    x = 355,463,846.71/21,133.34
  6. Step 6: Final answer
    x = 16,820.05

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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.